Development and initial validation of a new short and simple Health-Related Quality Of Life (HRQL) Questionnaire for Pediatric Rheumatic Diseases (PRD) - Palmisani E; Filocamo G; Saad-Magalhaes C; Consolaro A; Magni-Manzoni S; Viola S; Pistorio A; Ruperto N; Tani D; Serpico S; Martini A; Ravelli A (BMC, 2008)