Application Effect of Invasive to Noninvasive Mechanical Ventilation Step-down Therapy Strategy in Ventilator Dependent Patients with Tracheotomy 
GAO Shenghao,LI Lincan,ZHANG Xiaoju,MA Lijun,HUANG Taibo,HU Xingang,WANG Haibo,WANG Kai,CHENG Jianjian
Chinese General Practice . 2021, (5): 571 -576 .  DOI: 10.12114/j.issn.1007-9572.2020.00.511