共 2 条
[1]
Smoking cessation in patients with chronic obstructive pulmonary disease: a double-blind, placebo-controlled, randomized trial. Tashkin D P, Kanner R, Balley W, et al. The Lancet . 2001
[2]
Long-term treatment of chronic obstructive pulmonary disease with salmeterol and the additive effect of ipratropium. Van Noord J, De Munck D, Bantje T, et al. European Respiratory Journal . 2000