yashar ilkhchoui department of anesthesiology and critical care medicine, school of medicine, university of new mexico, albuquerque, usa; department of anesthesiology and critical care medicine, school of medicine, university of new mexico, albuquerque, usa. tel: +1-5052722610, fax: +1-5052721300 ramsis f. ghaly department of anesthesiology and pain management, advocate illinois masonic medical center, chicago, usa n. nick knezevic department of anesthesiology and pain management, advocate illinois masonic medical center, chicago, usa kenneth d candido department of anesthesiology and pain management, advocate illinois masonic medical center, chicago, usa

gholamali shahidi division of movement disorder, department of neurology, rasool-e akram hospital, tehran university of medical sciences, ir iran arash poorsattar bejeh mir dentistry school, babol university of medical sciences, ir iran; dentistry school, babol university of medical sciences, babol, ir iran. tel/fax: +98-1513216383 ramin khatib shahidi division of movement disorder, department of neurology, rasool-e akram hospital, tehran university of medical sciences, ir iran pouya balmeh dentistry school, babol university of medical sciences, ir iran

Theresa K. Hattenrath-Lehmann Mark W. Lusty Ryan B. Wallace Bennie Haynes Zhihong Wang Maggie Broadwater Jonathan R. Deeds Steve L. Morton William Hastback Leonora Porter Karen Chytalo Christopher J. Gobler