7Wells G, Shea B, O' connell D, et al. The Newcastle - Ottawa Scale(NOS) for assessing the quality of non - randomised studies in meta- analyses [ Z/OL ]. [ 2016 - 03 - 17 ]. https://www. researchgate, net/publication/261773681_The_Newcastle - Ottawa_ Scale_NOS_for Assessing_the_Quality_of_Non - Randomized_ Studies_in_Meta - Analysis.
8Wang KW, Chen HJ, Lu K, et al. Pneumonia in patients with severe head injury : incidence, risk factors, and outcomes [ J ]. Journal of Neurosurgery, 2013, 118 ( 2 ) : 358 - 363.
9RoquillyA, Seguin P, Mimoz O, et al. Risk factors for prolonged duration of mechanical ventilation in acute traumatic tetraplegic patients - - a retrospective cohort study [ J ]. Journal of Critical Care, 2014, 29(2) : 313. e7 -313.13.