PeterAMerkelMD

PubMed

• Myocardial infarction in a population-based cohort of patients with biopsy-confirmed giant cell arteritis in southern Sweden.
  Pavlos Stamatis, Moman Aladdin Mohammad, Karl Gisslander, Martin Englund, Carl Turesson, David Erlinge, Aladdin J Mohammad, Peter A Merkel> ;RMD Open. 2024 Apr 10
• Risk of Relapse of Antineutrophil Cytoplasmic Antibody-Associated Vasculitis in a Randomized Controlled Trial of Plasma Exchange and Glucocorticoids.
  Mats L Junek, Peter A Merkel, Eswari Vilayur, Ron Wald, Nader Khalidi, David Jayne, Michael Walsh> ;Arthritis & Rheumatology. 2024 Mar 14
• Stroke frequency, associated factors, and clinical features in primary systemic vasculitis: a multicentric observational study.
  Ruth Geraldes, Monica Santos, Cristina Ponte, Anthea Craven, Lillian Barra, Joanna C Robson, Nevin Hammam, Jason Springer, Jöerg Henes, Alojzija Hocevar, Jukka Putaala...> ;Journal of Neurology. 2024 Mar 12
• Clinical Characteristics and Outcomes of Polyarteritis Nodosa: An International Study.
  Karadag, O., Bolek, E., Ayan, G., Mohammad, A., Grayson, P., Pagnoux, C., Martín-Nares, E., Monti, S., Abe, Y., Alberici, F., Alibaz-Oner, F., Cuthbertson, D., Dagna, ...> ;Arthritis & Rheumatology. 2024 Feb 12
• Alveolar Hemorrhage in ANCA-associated Vasculitis: Results of an International, Randomized, Controlled Trial (PEXIVAS).
  Flores-Suárez, L., Cox, P., Jayne, D., Walsh, M., Fussner, L., Cartin-Ceba, R., Specks, U., Merkel, P.> ;American Journal of Respiratory and Critical Care Medicine. 2024 Feb 12
• Patients' perspectives on systemic sclerosis-related Raynaud's phenomenon in the feet: A qualitative study from the OMERACT Foot and Ankle Working Group.
  Lara S Chapman, Begonya Alcacer-Pitarch, John D Pauling, Caroline A Flurey, Anthony C Redmond, Pamela Richards, Ariane L Herrick, Peter A Merkel, Susanna Proudman, Hyl...> ;Seminars in Arthritis and Rheumatism. 2024 Apr 1
• Combined Orbital and Cranial Vessel Wall Magnetic Resonance Imaging for the Assessment of Disease Activity in Giant Cell Arteritis.
  Rennie L Rhee, Ryan Rebello, Madhura A Tamhankar, Shubhasree Banerjee, Fang Liu, Quy Cao, Robert Kurtz, Joshua F Baker, Zhaoyang Fan, Vatsal Bhatt, Naomi Amudala, Sher...> ;ACR Open Rheumatology. 2024 Apr 1
• Ultra-rare genetic variation in relapsing polychondritis: a whole-exome sequencing study.
  Yiming Luo, Marcela A Ferrada, Keith A Sikora, Cameron Rankin, Hugh D Alessi, Daniel L Kastner, Zuoming Deng, Mengqi Zhang, Peter A Merkel, Virginia B Kraus, Andrew S ...> ;Annals of the Rheumatic Diseases. 2024 Jan 11
• Urine and Plasma Complement Ba Levels During Disease Flares in Patients With Antineutrophil Cytoplasmic Autoantibody-Associated Vasculitis.
  Salem Almaani, Huijuan Song, Meshora Suthanthira, Christopher Toy, Lynn A Fussner, Alexa Meara, Haikady Nagaraja, David Cuthbertson, Nader A Khalidi, Curry L Koening, ...> ;Kidney International Reports. 2023 Nov 1
• Mitochondrial-mediated inflammation and platelet activation in giant cell arteritis.
  Despina Michailidou, Peter C Grayson, Payton Hermanson, Jorge Armando Gonzalez Chapa, David Cuthbertson, Nader A Khalidi, Curry L Koening, Carol A Langford, Carol A Mc...> ;Clinical Immunology. 2023 Oct 1
• 3 citations
  The impact of treatment with avacopan on health-related quality of life in antineutrophil cytoplasmic antibody-associated vasculitis: a post-hoc analysis of data from ...
  Jayne, D., Yue, H., Bekker, P., , Strand, V., Horomanski, A., Merkel, P.> ;The Lancet. Rheumatology. 2023 Aug 1
• 2 citations
  The Glucocorticoid Toxicity Index-Metabolic Domains, an abridged version of the Glucocorticoid Toxicity Index: post-hoc analysis of data from the ADVOCATE trial.
  Jayne, D., Bekker, P., Zhang, Y., McDowell, P., Johal, J., Heaney, L., Murrell, D., Stone, M., Yue, H., Patel, N., Merkel, P., Stone, J.> ;The Lancet. Rheumatology. 2023 Jul 1
• 3 citations
  Effects of nintedanib in patients with limited cutaneous systemic sclerosis and interstitial lung disease.
  Yannick Allanore, Dinesh Khanna, Vanessa Smith, Martin Aringer, Anna-Maria Hoffmann-Vold, Masataka Kuwana, Peter A Merkel, Christian Stock, Steven Sambevski, Christoph...> ;Rheumatology. 2024 Mar 1
• Assessment of Cutaneous Vasculitis and Quality of Life.
  Sarah Mann, Aamir Hussain, Anisha B Dua, Angelina Patrone, Kalen Larson, Peter A Merkel, Robert G Micheletti> ;JAMA Dermatology. 2023 Jun 1
• Domain reporting in Systemic Sclerosis-Related Digital Ulcers: An OMERACT Scoping Review.
  Michael Hughes, Nancy Maltez, Edith Brown, Virginia Hickey, Beverley Shea, John D Pauling, Susanna Proudman, Peter A Merkel, Ariane L Herrick> ;Seminars in Arthritis and Rheumatism. 2023 Aug 1
• Engaging Multistakeholder Perspectives to Identify Patient-Centered Research Priorities Regarding Vaccine Uptake Among Adults With Autoimmune Conditions.
  Shilpa Venkatachalam, Kelly Gavigan, Shubhasree Banerjee, Jennifer Gordon, Lisa Emrich, Hope Sullivan, Ashira Blazer, Brittany Banbury, Kimberly N Weaver, Laura Stradf...> ;ACR Open Rheumatology. 2023 Jun 1
• Domain reporting in systemic sclerosis-related Raynaud's phenomenon: An OMERACT scoping review.
  Nancy Maltez, Michael Hughes, Edith Brown, Virginia Hickey, Beverley Shea, Ariane L Herrick, Susanna Proudman, Peter A Merkel, John D Pauling> ;Seminars in Arthritis and Rheumatism. 2023 Aug 1
• Reply.
  Xinping Tian, Mengtao Li, Nan Jiang, Peter A Merkel, Xiaofeng Zeng> ;Arthritis & Rheumatology. 2023 Oct 1
• Ultra-Rare Genetic Variation in Relapsing Polychondritis: A Whole-Exome Sequencing Study.
  Yiming Luo, Marcela A Ferrada, Keith A Sikora, Cameron Rankin, Hugh Alessi, Daniel L Kastner, Zuoming Deng, Mengqi Zhang, Peter A Merkel, Virginia B Kraus, Andrew S Al...> ;Medrxiv. 2023 Apr 17
• Using pooled electronic health records data to conduct pharmacoepidemiology safety studies: Challenges and lessons learned.
  Timothy Beukelman, Lang Chen, Narender Annapureddy, Megan E B Clowse, Millie Long, Michael D Kappelman, Rennie L Rhee, Peter A Merkel, William Benjamin Nowell, Fenglon...> ;Pharmacoepidemiology and Drug Safety. 2023 Sep 1
• 6 citations
  Renal Recovery for Patients with ANCA-Associated Vasculitis and Low eGFR in the ADVOCATE Trial of Avacopan.
  Frank B Cortazar, John L Niles, David R W Jayne, Peter A Merkel, Annette Bruchfeld, Huibin Yue, Thomas J Schall, Pirow Bekker> ;Kidney International Reports. 2023 Apr 1
• 75 citations
  EULAR recommendations for the management of ANCA-associated vasculitis: 2022 update.
  Bernhard Hellmich, Beatriz Sanchez-Alamo, Jan H Schirmer, Alvise Berti, Daniel Blockmans, Maria C Cid, Julia U Holle, Nicole Hollinger, Omer Karadag, Andreas Kronbichl...> ;Annals of the Rheumatic Diseases. 2024 Jan 2
• Direct-to-Consumer Recruitment Methods via Traditional and Social Media to Aid in Research Accrual for Clinical Trials for Rare Diseases: Comparative Analysis Study.
  Janelle Applequist, Cristina Burroughs, Peter A Merkel, Marc Rothenberg, Bruce Trapnell, Robert Desnick, Jeffrey Krischer, Sahin, M.> ;Journal of Medical Internet Research. 2023 Mar 14
• 7 citations
  Comparative Efficacy of Secukinumab Versus Tumor Necrosis Factor Inhibitors for the Treatment of Takayasu Arteritis.
  Xinping Tian, Mengtao Li, Nan Jiang, Yang Zhao, Jing Li, Yangzhong Zhou, Yahong Wang, Ying Wang, Taotao Li, Yunjiao Yang, Yanhong Wang, Peter A Merkel, Xiaofeng Zeng> ;Arthritis & Rheumatology. 2023 Aug 1
• 7 citations
  Neutrophil extracellular trap formation in anti-neutrophil cytoplasmic antibody-associated and large-vessel vasculitis.
  Despina Michailidou, Runa Kuley, Ting Wang, Payton Hermanson, Peter C Grayson, David Cuthbertson, Nader A Khalidi, Curry L Koening, Carol A Langford, Carol A McAlear, ...> ;Clinical Immunology. 2023 Apr 1
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Journal Articles

• Pulmonary Eosinophilic Granulomatosis with Polyangiitis Has IgG4 Plasma Cells and Immunoregulatory Features  
  Zachary M Dong, Michael E Wechsler, Praveen Akuthota, Peter A Merkel, Ulrich Specks, Benjamin Raby, Frederic Clayton, The American Journal of Pathology
• Role of Macrophage Migration Inhibitory Factor in Granulomatosis with Polyangiitis  
  Peter A Merkel, Curry L Koening, Antoine G Sreih, Arthritis & Rheumatology
• Mapping of the OMERACT core set for ANCA-associated vasculitis to the international classification of function, disability and health  
  Milman N, Boonen A, Merkel PA, Tugwell P, Arthritis Care Res, 1/21/2014
• Peripheral CD5+ B-cells in ANCA-associated vasculitis  
  Unizony S, Lim N, Phippard DJ, Carey VJ, Miloslavsky EM, Tchao NK, Ikle D, Asare AL, Merkel PA, Monach PA, Seo P, St Clair EW, Langford CA, Spiera R, Hoffman GS, Kalle..., Arthritis Rheumatol, 1/20/2014
• Current Status of Outcome Measure Development in Vasculitis  
  Merkel PA, Aydin SZ, Boers M, Cornell C, Direskeneli H, Gebhart D, Hatemi G, Luqmani R, Matteson EL, Milman N, Robson J, Seo P, Tomasson G, Journal of Rheumatology, 1/15/2014
• Alcohol-induced vasculitis: Case report and commentary  
  Abuabara K, Samimi S, Chu EY, Bluebond ND, James WD, Merkel PA, Journal of the American Academy of Dermatology, 1/1/2014
• Brief report: the value of a patient global assessment of disease activity in granulomatosis with polyangiitis (Wegener's)  
  Tomasson G, Davis JC, Hoffman GS, McCune WJ, Specks U, Spiera R, St Clair EW, Stone JH, Merkel PA, Arthritis & Rheumatology, 1/1/2014
• Correlates and responsiveness to change of measures of skin and musculoskeletal disease in early diffuse systemic sclerosis  
  Wiese AB, Berrocal VJ, Furst DE, Seibold JR, Merkel PA, Mayes MD, Khanna D, Arthritis Care Res, 1/1/2014
• Outcome Measures Used in Clinical Trials for Behcet Syndrome: A Systematic Review  
  Hatemi G, Merkel PA, Hamuryudan V, Boers M, Direskeneli H, Aydin SZ, Yazici H, Journal of Rheumatology, 1/1/2014
• Patient-powered research networks: building capacity for conducting patient-centered clinical outcomes research  
  PCORnet PPRN Consortium, Daugherty SE, Wahba S, Fleurence R. Collaborators: Avillach P, Buelow J, Colletti R, Eichler F, Ginsberg S, Dewitt EM, McBurney R, Merkel PA, ..., J Am Med Inform Assoc, 1/1/2014
• Risk of Cardiovascular Disease Early and Late After a Diagnosis of Giant Cell Arteritis  
  Tomasson G, Peloquin C, Mohammad A, Love TJ, Zhang Y, Choi HK, Merkel PA, Annals of Internal Medicine, 1/1/2014
• Updating the OMERACT Filter: Core Areas as a Basis for Defining Core Outcome Sets  
  Kirwan JR, Boers M, Hewlett S, Beaton D, Bingham CO 3rd, Choy E, Conaghan PG, D'Agostino MA, Dougados M, Furst DE, Guillemin F, Gossec L, van der Heijde DM, Kloppenbur..., J Rheumatol, 1/1/2014
• Variability of the Impact of Adverse Events on Physicians' Decision Making  
  Cozmuta R, Wahl ER, Merkel PA, Fraenkel L, BMC Medical Informatics and Decision Making, 1/1/2014
• Incidence and Mortality Rates of Biopsy-Proven Giant Cell Arteritis in Southern Sweden  
  Mohammad AJ, Nilsson J, Jacobsson L, Merkel PA, Turesson C, Annals of Rheumatic Diseases, 1/17/2013
• 2012 Revised International Chapel Hill Consensus Conference Nomenclature of Vasculitides  
  Jennette JC, Falk RJ, Bacon PA, Basu N, Cid MC, Ferrario F, Flores-Suarez LF, Gross WL, Guillevin L, Hagen EC, Hoffman GS, Jayne DR, Kallenberg CGM, Lamprecht P, Langf..., Arthritis & Rheumatism, 1/1/2013
• 2013 classification criteria for systemic sclerosis: an American college of rheumatology/European league against rheumatism collaborative initiative  
  van den Hoogen F, Khanna D, Fransen J, Johnson SR, Baron M, Tyndall A, Matucci-Cerinic M, Naden RP, Medsger TA Jr, Carreira PE, Riemekasten G, Clements PJ, Denton CP, ..., Ann Rheum Dis, 1/1/2013
• 2013 classification criteria for systemic sclerosis: an American College of Rheumatology/European League against Rheumatism collaborative initiative  
  van den Hoogen F, Khanna D, Fransen J, Johnson SR, Baron M, Tyndall A, Matucci-Cerinic M, Naden RP, Medsger TA Jr, Carreira PE, Riemekasten G, Clements PJ, Denton CP, ..., Arthritis Rheum, 1/1/2013
• ACR/EULAR-endorsed study to develop Diagnostic and Classification Criteria for Vasculitis (DCVAS)  
  Craven A, Robson J, Ponte C, Grayson PC, Suppiah R, Judge A, Watts R, Merkel PA, Luqmani RA, Clin Exp Nephrol, 1/1/2013
• An open-label trial of abatacept (CTLA4-IG) in non-severe relapsing granulomatosis with polyangiitis (Wegener's)  
  Langford CA, Monach PA, Specks U, Seo P, Cuthbertson D, McAlear CA, Ytterberg SR, Hoffman GS, Krischer JP, Merkel PA, Ann Rheum Dis, 1/1/2013
• Granulomatosis with polyangiitis (Wegener’s) is associated with HLA-DPB1*04 and SEMA6A gene variants: Evidence from genome-wide analysis  
  Xie G, Roshandel D, Sherva R, Monach PA, Lu Y, Kung T, Carrington K, Zhang SS, Pulit SL, Ripke S, Carette S, Dellaripa PF, Edberg JC, Hoffman GS, Khalidi N, Langford ..., Arthritis & Rheumatism, 1/1/2013
• Identification of Multiple Genetic Susceptibility Loci in Takayasu Arteritis  
  Am J Hum Genet, 1/1/2013
• Illness perceptions and fatigue in systemic vasculitis  
  Grayson PC, Amudala NA, McAlear CA, Leduc RL, Shereff D, Richesson R, Fraenkel L, Merkel PA, Arthritis Care Res, 1/1/2013
• Maintenance of Rituximab-induced Remissions in ANCA-Associated Vasculitis  
  Specks S, Merkel PA, Seo P, Spiera R, Langford CA, Hoffman GS, Kallenberg CGM, St. Clair EW, Fessler B, Ding L, Webber L, Tchao NK, Phippard DJ, Asare AL, Lim N, Ikle ..., New England Journal of Medicine, 1/1/2013
• New Features of Disease after Diagnosis in Six Forms of Systemic Vasculitis  
  Grayson PC, Cuthbertson DC, Carette S, Hoffman GS, Khalidi NA, Koening CL, Langford CA, Maksimowicz-McKinnon K, Monach PA, Seo P, Specks U, Ytterberg SR, Merkel PA for..., Journal of Rheumatology, 1/1/2013
• Plasma exchange and glucocorticoid dosing in the treatment of anti-neutrophil cytoplasm antibody associated vasculitis (PEXIVAS): protocol for a randomized controlled ...  
  Walsh M, Merkel PA, Peh CA, Szpirt W, Guillevin L, Pusey CD, Dezoysa J, Ives N, Clark WF, Quillen K, Winters JL, Wheatley K, Jayne D; PEXIVAS Investigators, Trials, 1/1/2013
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Books/Book Chapters

• Atlas of Vascular Medicine 
  Chapter: Vasculitis 
  Mahr AD, Merkel PAEditors: Creager M.Elsevier, Philadelphia, PAEdition 3rd,2007
• Cecil Essentials of Medicine 
  Chapter: Approach to the Patient with Rheumatic Disease. 
  Merkel PA, Simms RWEditors: Andreoli TE, Carpenter, CCJ, Griggs, RC, Loscalzo, J.W.B. Saunders Company, Philadelphia, PAEdition 7th,2007
• Cecil Essentials of Medicine 
  Chapter: Crystal Arthropathies. 
  Simms RW, Merkel PAEditors: Andreoli TE, Carpenter, CCJ, Griggs, RC, Loscalzo, J.W.B. Saunders Company, Philadelphia, PAEdition 7th,2007
• Cecil Essentials of Medicine 
  Chapter: Rheumatoid Arthritis. 
  Merkel PA, Simms RWEditors: Andreoli TE, Carpenter, CCJ, Griggs, RC, Loscalzo, J.W.B. Saunders Company, Philadelphia, PAEdition 7th,2007
• Cecil Essentials of Medicine 
  Chapter: Systemic Sclerosis (Scleroerma). 
  Simms RW, Merkel PAEditors: Andreoli TE, Carpenter, CCJ, Griggs, RC, Loscalzo, J.W.B. Saunders Company, Philadelphia, PAEdition 7th,2007
• Vascular Medicine. 
  Chapter: Giant Cell Arteritis. 
  Cid M, Merkel PAEditors: Creager M, Loscalzo J.Elsevier, Philadelphia, PAEdition 3rd,2006
• Vascular Medicine. 
  Chapter: Overview of Vasculitis. 
  Merkel PAEditors: Creager M, Loscalzo J.Elsevier, Philadelphia, PAEdition 3rd,2006
• Peripheral Arterial Disease: Diagnosis and Treatment. 
  Chapter: Large Vessel Vasculitis. 
  Page 319 - 345Kissin E, Merkel PAEditors: Coffman JD, Eberhardt RT.The Humana Press, Totowa, NJ2003
• Primer in Rheumatic Disease. 
  Chapter: Rheumatologic Manifestations of Endocrine Diseases. 
  Page 435 - 439Merkel PAEditors: Klippel, JH.Arthritis Foundation, Atlanta, GAEdition 12th,2002
• Inflammatory Diseases of Blood Vessels 
  Chapter: Drug-Induced Vasculitis.: Drug-Induced Vasculitis. 
  Page 727 - 746Merkel PAEditors: Hoffman, GS and Weyand, CM.Marcel Dekker, Inc., New York, NY2001
• Cecil Essentials of Medicine 
  Chapter: Antiphospholipid Antibody Syndrome. 
  Merkel PAEditors: Andreoli TE, Carpenter, CCJ, Griggs, RC, Loscalzo, J.W.B. Saunders Company, Philadelphia, PAEdition 5th,2001
• Cecil Essentials of Medicine 
  Chapter: Sjogren's Syndrome. 
  Merkel PAEditors: Andreoli TE, Carpenter, CCJ, Griggs, RC, Loscalzo, J.W.B. Saunders Company, Philadelphia, PAEdition 5th,2001
• Cecil Essentials of Medicine 
  Chapter: Spondyloarthropathies. 
  Merkel PAEditors: Andreoli TE, Carpenter, CCJ, Griggs, RC, Loscalzo, J.W.B. Saunders Company, Philadelphia, PAEdition 5th,2001
• Cecil Essentials of Medicine 
  Chapter: Systemic Lupus Erythematosus. 
  Merkel PAEditors: Andreoli TE, Carpenter, CCJ, Griggs, RC, Loscalzo, J.W.B. Saunders Company, Philadelphia, PAEdition 5th,2001
• Cecil Essentials of Medicine 
  Chapter: Vasculitides. 
  Merkel PAEditors: Andreoli TE, Carpenter, CCJ, Griggs, RC, Loscalzo, J.W.B. Saunders Company, Philadelphia, PAEdition 5th,2001
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Lectures

• Past, Present, and Future of Clinical Trials in Vasculitis. Visiting Professor 
  Fudan Medical University, Shanghai, China - 1/1/2014
• ANCA-Associated Vasculitis. Visiting Professor 
  University of Pittsburgh, Pittsburgh, PA - 1/1/2014
• ANCA-Associated Vasculitis: Evaluation and Management 
  1/29/2013
• Building your Research Portfolio. 
  San Diego, CA - 1/27/2013
• Dos and Dont’s of Grant Writing 
  Dallas, TX - 1/22/2013
• Past, Present, and Future of Clinical Trials in Vasculitis 
  University of Michigan - 1/21/2013
• The Future of International Trials in Vasculitis 
  Paris, France - 1/17/2013
• The CRISS protocol (Combined Response Index for Systemic Sclerosis). 
  Boston, MA - 1/7/2013
• Advances in the Evaluation and Management of Vasculitis. 
  1/4/2013
• Update on the Vasculitis Clinical Research Consortium. 
  Toronto Western Hospital, Toronto, Ontario, Canada - 1/1/2013
• Clinical Investigation of Vasculitis: Activities of the Vasculitis Clinical Research Consortium 
  Tokyo, Japan - 1/28/2012
• Current Clinical Controversies in Vasculitis 
  Nova Scotia, Canada - 1/9/2012
• ANCA-Associated Vasculitis: An Update for Internists 
  Henry Ford Hospital - 1/7/2012
• Biomarkers in Vasculitis 
  1/1/2012
• ANCA-Associated Vasculitis: Classification, Diagnosis, and Monitoring 
  Los Angeles, CA - 1/30/2011
• ANCA-Associated Vasculitis: Treatment with Immunosuppressive, Biologic, and Experimental Agents 
  Los Angeles, CA - 1/30/2011
• Current Controversies in Clinical Vasculitis 
  1/29/2011
• Mimics of Vasculitis. Invited Speaker 
  Waltham, MA - 1/19/2011
• Defining Disease Activity and Damage in Patients with Small Vessel Vacuities 
  Cleveland, OH - 1/14/2011
• Clinical Research in Vasculitis 
  University of Pennsylvania, Philadelphia, PA - 1/10/2011
• Takayasu’s Arteritis 
  Chicago, IL - 1/8/2011
• Recent and Future Clinical Trials in Vasculitis 
  Beth Israel Deaconess Medical Center, Boston, MA - 1/7/2011
• New Treatments for Vacuities 
  New Treatments for Vacuities - 1/1/2011
• Clinical Features and Management of Rheumatoid Arthritis and Sjögren's Syndrome 
  Boston University School of Medicine - 1/1/2011
• How to Write a Research Proposal 
  Boston University School of Medicine - 1/1/2011
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Other

• Takayasu's Arteritis. Patient education material from The American College of Rhematology 
  Monach PA, Merkel PA
  www.rheumatology.org/public/factsheets
  1/1/2012
• Vasculitis. Patient education material from The American College of Rhematology 
  Monach PA, Merkel PA
  www.rheumatology.org/public/factsheets
  1/1/2012
• Patient education material from The American College of Rhematology. 
  Korn JH, Merkel PA, Scleroderma
  www.rheumatology.org/public/factsheets
  1/1/2009
• Arthritis episode of "Doctors On Call" television program. Expert panelist. 
  Merkel P, WABU-TV
  Boston, MA - 1/1/1998
• Clinical manifestations and diagnosis of polyarteritis nodosa 
  Merkel PA
  http://www.uptodate.com/contents/clinical-manifestations-and-diagnosis-of-polyarteritis-nodosa
  UpToDate, Wolters Kluwer Health - 2012-11-28
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