Musculoskeletal ultrasound (MSK-US) in pediatric rheumatology: European preliminary results of the survey of the Pediatric Ultrasound Group of the Omeract Ultrasound Task Force - Muratore Valentina; Merli Pietro; D'Agostino Maria; Naredo Esperanza; Roth Johannes; Collado Paz; Magni-Manzoni Silvia; Jousse-Joulin Sandrine (BMC, 2011)