Level of parent-asthmatic child agreement on health-related quality of life - Petsios, Konstantinos; Priftis, Kostas N; Tsoumakas, Constantinos; Hatziagorou, Elpis; Tsanakas, John N; Galanis, Petros; Antonogeorgos, George; Matziou, Vasiliki (Journal of Asthma, 2011)