Smoking rather than diet deficiency is related with airway obstruction in Korea.
Hojoong
H
Kim
D000402:Airway Obstruction / Q000453:epidemiology*; D006801:Humans; D044342:Malnutrition / Q000453:epidemiology*; D056910:Republic of Korea / Q000453:epidemiology; D012307:Risk Factors; D012907:Smoking / Q000453:epidemiology*