Comment on

• Effects of smoking intervention and the use of an inhaled anticholinergic bronchodilator on the rate of decline of FEV1. The Lung Health Study.

  Anthonisen NR, Connett JE, Kiley JP, Altose MD, Bailey WC, Buist AS, Conway WA Jr, Enright PL, Kanner RE, O'Hara P, et al. Anthonisen NR, et al. JAMA. 1994 Nov 16;272(19):1497-505. JAMA. 1994. PMID: 7966841 Clinical Trial.