Inspiratory muscle training followed by non-invasive positive pressure ventilation in patients with severe chronic obstructive pulmonary disease: a randomized controlled trial
周露茜,黎晓莹,李允,郭炳鹏,关力理,陈新,罗裕文,罗鹏,陈荣昌
Journal of Southern Medical University . 2016, (08): 1069 .