Muscle ultrasonography is a potential tool for detecting fasciitis in dermatomyositis and polymyositis: comment on the article by Yoshida et al. Issue 11 (27th October 2017) - Bhansing, Kavish J.; van Rosmalen, Marieke H.; van Engelen, Baziel G.; van Riel, Piet L.; Pillen, Sigrid; Vonk, Madelon C.