Validation of smoking cessation self-reported by patients with chronic obstructive pulmonary disease

por Hilberink, Sander R, Jacobs, Johanna E, van Opstal, Sanne, van der Weijden, Trudy, Keegstra, Janine, Kempers, Pascal LJ, Muris, Jean WM, Grol, Richard PTM, de Vries, Hein
Publicado 2011