2Vermeeren MA, Wouters EF,Geraerts-Keeris AJ,et al. Nutri- tional support in patients with chronic obstructive pulmonary disease during hospitalization for an acute exacerbation; a ran- domized controlled feasibility trial[J]. Clin Nutr, 2004,23(5) : 1 184--1 192.
3Regional COPD Working Group. COPD Prevalence in 12 Asia-- Pacific countries and regions: Projections based on the COPD prevalence eslimation model [J].Respirology, 2003, 8 (2) : 192--198.