Longitudinal evaluation of bone mass in adolescents and young adults with juvenile idiopathic arthritis: the role of bone mass determinants in a large cohort of patients - Marco Matucci; Lorenzo Ceri; Serena Capannini; Laura Masi; Loredana Cavalli; Stefano Stagi; Fernanda Falcini; Luisa Brandi (BMC, 2011)