7Merenlender-Wagner A, Dikshtein Y, Yadid G. The beta-endorphin role in stress-related psychiatric disorders [ J ). Curr Drug Targets, 2009 ; 10 ( 11 ) : 1096-108.
9Windisch W, Haenel M, Storre JH, et al. High-intensity non- invasive positive pressure ventilation for stable hypercapnic COPD [J]. International Journal of Medical Sciences,2009,6 (2) :72.
10Burns KE,Adhikari NK,Keenan SP,et al. Noninvasive posi- tive pressure ventilation as a weaning strategy for intubated adults with respiratory failure [J]. Cochrane Database Syst Rev, 2010,8(8) :337-58.