PT -期刊文章盟Shneerson JM TI - changing role of mechanical ventilation in COPD DP - 1996 Mar 01 TA - European Respiratory Journal PG - 393--398 VI - 9 IP - 3 4099 - //www.qdcxjkg.com/content/9/3/393.short 4100 - //www.qdcxjkg.com/content/9/3/393.full SO - Eur Respir J1996 Mar 01; 9