Bogaard Harm J, Grotjohan Hans P, Tjwa Eric, van den Berg Fred G, Postmus Pieter E, van Nieuwkerk Carin M J, Vonk-Noordegraaf Anton
Department of Pulmonary Medicine, VU Medical Centre, PO Box 7057, 1007 MB, Amsterdam, the Netherlands.
Chest. 2007 Sep;132(3):1088-92. doi: 10.1378/chest.07-0086.