4Willemse BW.Postma DS.Tinsens W,et al.The impact of smoking cessiltion on respiratory symptoms,lung funetion,airway hypereeponsivenses and inflammation.Eur Respir J,2004,23(3):464-476
5Fiorc MC, Bailey WC, Cohen SJ, et al. The tobacco use and dependence clinical practice guideline panel, staff, and consortium representatives.JAMA, 2000,28:3244-3254