“Supplementum 171: Joint Annual Meeting of the Swiss Respiratory Society, the Swiss Society of Occupational Medicine, the Swiss Paediatric Respiratory Society and the Swiss Society for Thoracic Surgery (Davos, Switzerland, April 16-17, 2009)”. 2009. Swiss Medical Weekly 139 (1314): Suppl. 171. https://doi.org/10.57187/s.5307.