3Qaseem A,Snow V,Fitterman N,et al. Risk assessment for and strategies to reduce perioperative pulmonary complications for patients undergoing noncardiothoracic surgery: a guideline from the American College of Physicians[ J ]. Ann Intern Med, 2006,144(8 ) : 575-580.
4Liu L, Zheng S, Xu Y, et al. Systematic review and meta- analysis of percutaneous nephrolithotomy for patients in the supine versus prone position[J]. J Endourol,2010,24(12) : 1941-1946.
5Sharma V, Verghese C, McKenna PJ. Prospective audit on the use of the LMA-Supreme for airway management of adult patients undergoing elective orthopaedic surgery in prone position [J]. Br J Anaesth, 2010,105(2) :228-232.