Investigation of Muscle DiseaseJNNP 60:256-274, Mastaglia,F.L.&Laing,N.G., 1996
Current Concepts in the Idiopathic Inflammatory Myopathies:Polymyositis, Dermatomyositis, and Related DisordersAnn Int Med 111:143-157, Plotz,P.H.,et al, 1989