Similarities and differences between East and West in COPD.
First Department of Medicine, Hokkaido University School of Medicine, Sapporo, Hokkaido, Japan.
Masaharu
M
Nishimura
D005541:Forced Expiratory Volume; D006801:Humans; D029424:Pulmonary Disease, Chronic Obstructive; D011788:Quality of Life
chronic obstructive pulmonary disease; clinical epidemiology; clinical trial; quality of life