Defining polymyalgia rheumatica: comment on the article by Helfgott and Kieval.
Caplan
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D001172:Arthritis, Rheumatoid / Q000175:diagnosis; D001799:Blood Sedimentation; D003937:Diagnosis, Differential; D003951:Diagnostic Errors; D013700:Giant Cell Arteritis / Q000175:diagnosis; D006801:Humans; D009382:Neoplasms, Unknown Primary / Q000175:diagnosis; D011111:Polymyalgia Rheumatica / Q000175:diagnosis* / Q000209:etiology; D017285:Polymyositis / Q000175:diagnosis