Improvement in Health and Possible Reduction in Disease Activity Using Endurance Exercise in Patients With Established Polymyositis and Dermatomyositis: A Multicenter Randomized Controlled Trial With a 1‐Year Open Extension FollowupLi Alemo Munters, Helene Alexanderson, Vivianne Andgren et al.|Arthritis Care & Research|2013Cited by 103