Comment on: Appropriateness of study design.
Perry
Dan
D
D016022:Case-Control Studies; D005938:Glucocorticoids / Q000009:adverse effects; D006801:Humans; D007270:Injections, Intra-Articular; D012107:Research Design; D000070636:Rotator Cuff Injuries; D009626:Terminology as Topic
D005938:Glucocorticoids