@article{e163efa022d44d448ea8d823fd260c3f,
title = "Protective effect of a bacterial extract against acute exacerbation in patients with chronic bronchitis accompanied by chronic obstructive pulmonary disease",
keywords = "Bacterial lysate, Bronchitis, Chronic obstructive, Pulmonary disease",
author = "Jing Li and Zheng, \{Jin Ping\} and Yuan, \{Jin Ping\} and Zeng, \{Guang Qiao\} and Zhong, \{Nan Shan\} and Lin, \{Cai Yuan\}",
year = "2004",
month = jun,
language = "English",
volume = "117",
pages = "828--834",
journal = "Chinese Medical Journal",
issn = "0366-6999",
number = "6",
}