Polymyositis: not a unicorn or mythological beast...but maybe a duck?
Kissel
John T
JT
D001706:Biopsy; D003882:Dermatomyositis / Q000175:diagnosis / Q000503:physiopathology; D003937:Diagnosis, Differential; D003951:Diagnostic Errors / Q000517:prevention & control*; D006801:Humans; D018482:Muscle, Skeletal / Q000276:immunology / Q000473:pathology* / Q000503:physiopathology; D009220:Myositis / Q000175:diagnosis* / Q000453:epidemiology* / Q000503:physiopathology; D018979:Myositis, Inclusion Body / Q000175:diagnosis / Q000503:physiopathology; D017285:Polymyositis / Q000175:diagnosis* / Q000453:epidemiology* / Q000503:physiopathology; D011237:Predictive Value of Tests; D015203:Reproducibility of Results; D018401:Sample Size