Longitudinal change of prebronchodilator spirometric obstruction and health outcomes: results from the SAPALDIA cohort
N M Probst-Hensch, I Curjuric, B Pierre-Olivier, U Ackermann-Liebrich, R W Bettschart, O Brändli, M Brutsche, L Burdet, M W Gerbase, B Knöpfli, N Künzli, M G Pons, C Schindler, J-M Tschopp, T Rochat, E W Russi
Thorax Feb 2010, 65 (2) 150-156; DOI: 10.1136/thx.2009.115063