Correlation between lower gastrointestinal tract symptoms and quality of life in patients with stable chronic obstructive pulmonary disease
Yan Sun, Fengjie Zheng, Yuhang Li, Ruohan Wu, Yuchao Liu, Miao Liu, Jinchao Zhang, Kuo Gao
Journal of Traditional Chinese Medicine . 2013, (05): 608 -614 .  DOI: 10.1016/s0254-6272(14)60029-7