TY  - GEN
AU  - Wen,Fu-qiang
AU  - Shen,Yong-chun
TI  - [Expectorant therapy revisited in chronic obstructive pulmonary disease]
SN  - 1001-0939
PY  - 2012///1018
KW  - Expectorants
KW  - therapeutic use
KW  - Humans
KW  - Pulmonary Disease, Chronic Obstructive
KW  - drug therapy
N1  - Publication Type: Editorial
ER  -