K Larsson, P Ohlsén, L Larsson, P Malmberg, P O Rydström, H Ulriksen et al
Larsson K, Ohlsén P, Larsson L, Malmberg P, Rydström P O, Ulriksen H et al.
High prevalence of asthma in cross country skiers.
British Medical Journal 1993; 307 :1326
doi:10.1136/bmj.307.6915.1326