Clinical diagnosis of current asthma: predictive value of respiratory symptoms in the SAPALDIA study
D. Sistek, J-M. Tschopp, C. Schindler, M. Brutsche, U. Ackermann-Liebrich, A-P. Perruchoud, P. Leuenberger, SAPALDIA team
European Respiratory Journal Feb 2001, 17 (2) 214-219; DOI: 10.1183/09031936.01.17202140