%0 Journal Article %T Polymyositis without Beneficial Response to Steroid Therapy: Should Miyoshi Myopathy be a Differential Diagnosis? %A David S. Lynch %A Heinz Jungbluth %A Henry Houlden %A Jefferson Becker %A Paulo Jos¨¦ Lorenzoni %A Renata Siciliani Scalco %A Ros Quinlivan %A William Alves Martins %J Archive of "The American Journal of Case Reports". %D 2017 %R 10.12659/AJCR.900970 %K Diagnostic Errors %K Genetic Testing %K Myalgia %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5228759/