International Journal of Preventive Medicine (Int J Prev Med)2008-780241220120915The Impact of Reverse Trendelenburg Versus Head up Position on Intra Operative Bleeding of Elective Rhinoplasty143841ENAnesthesiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, IranAnesthesiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, IranModarres Hospital, Shahid Beheshti University of Medical Sciences, Tehran, IranModarres Hospital, Shahid Beheshti University of Medical Sciences, Tehran, IranChronic Respiratory Disease Research Center (CRDRC), NRITLD, Masih Daneshvari Hospital, Shahid Beheshti University of Medical Sciences, Tehran, IranChronic Respiratory Disease Research Center (CRDRC), NRITLD, Masih Daneshvari Hospital, Shahid Beheshti University of Medical Sciences, Tehran, IranChronic Respiratory Disease Research Center (CRDRC), NRITLD, Masih Daneshvari Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran20120915-http://ijpm.mui.ac.ir/index.php/ijpm/article/view/914http://ijpm.mui.ac.ir/index.php/ijpm/article/download/914/1314