The support of the ultrasonography of the shoulder in the diagnosis of polymyalgia rheumatica with normal erythrocyte sedimentation rate. Reumatismo [Internet]. 2009 Sep. 30 [cited 2025 Jul. 12];61(4):290-7. Available from: https://www.reumatismo.org/reuma/article/view/reumatismo.2009.290