[1] Chengdu Med Coll, Clin Med Coll, Chengdu, Sichuan, Peoples R China
[2] Chengdu Med Coll, Affiliated Hosp 1, Emergency Dept, Chengdu, Sichuan, Peoples R China
[3] Chengdu Med Coll, Affiliated Hosp 1, Dept Obstet, Chengdu, Sichuan, Peoples R China
[4] Chengdu Med Coll, Affiliated Hosp 1, Dept Pulm & Crit Care Med, Chengdu, Sichuan, Peoples R China
[5] Chengdu Med Coll, Clin Med Coll, BaoGuang St 278, Chengdu 610500, Sichuan, Peoples R China
[6] Chengdu Med Coll, Affiliated Hosp 1, BaoGuang St 278, Chengdu 610500, Sichuan, Peoples R China