Made available in DSpace on 2022-04-28T20:59:35Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-12-01; Objective: To describe onset features, classification and treatment of juvenile dermatomyositis (JDM) and juvenile polymyositis (JPM) from a multicentre registry. Methods: Inclusion criteria were onset age lower than 18 years and a diagnosis of any idiopathic inflammatory myopathy (IIM) by attending phy...