@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",
}