[Application of double-level non-invasive positive ventilation in rehabilitation of patients with coal workers' pneumoconiosis].
Hou
Le-zhi
LZ
Zhang
Qun
Q
Wang
Chuan-gui
CG
D000368:Aged; D003032:Coal Mining; D006801:Humans; D008297:Male; D011009:Pneumoconiosis / Q000534:rehabilitation*; D011175:Positive-Pressure Respiration / Q000379:methods*