Ruperto, N, Machado, C, Ravelli, A, Pistorio, A, Andersson Gäre, B, Dolezalova, P, Flato, B, Harjacek, M, Hofer, M, Joos, R, Kuis, W, Lahdenne, P, Melo-Gomes, J, Moroldo, M, Nielsen, S, Susic, G, Alessio, M, Buoncompagni, A, Maldonado, C, Cortis, E, Gerloni, V, Lee, J, Nugent, J, Silva, S & Martini, A 2000, '
An international survey in 29 countries on health related quality of life (HRQOL) in juvenile idiopathic arthritis (JIA). Part I: a disease specific instrument: the Childhood Health Assessment Questionnaire (CHAQ)',
Annals of the Rheumatic Diseases, vol. 59, no. 9, pp. 726.