The Short Term Effect of Different Oxygen Therapies in Non-surgical Critically Ill Patients after Extubation 
SUN Bo,ZHANG Tianqing,HU Xuezhong,JIANG Mingming,SONG Liqing,SUN Qin
Chinese General Practice . 2019, (17): 2121 -2124 .  DOI: 10.12114/j.issn.1007-9572.2018.00.291