Incidence of chronic obstructive pulmonary disease, and the relationship between age and smoking in a Japanese population

Kojima S, Sakakibara H, Motani S, Hirose K, Mizuno F, Ochiai M, Hashimoto S. Incidence of chronic obstructive pulmonary disease, and the relationship between age and smoking in a Japanese population. J Epidemiol. 2007; 17(2): 54–60.