More Groups
Fewer Groups
More People
Fewer People
Nagula, S.; Ishill, N.; Nash, C.; Markowitz, A. J.; Schattner, M. A.; Temple, L.; Weiser, M. R.; Thaler, H. T.; Zauber, A.; Gerdes, H. Journal of the American College of Surgeons (2010)
Power, D. G.; Schattner, M.; Gerdes, H.; Brenner, B.; Markowitz, A. J.; Capanu, M.; Coit, D. G.; Brennan, M.; Kelsen, D. P.; Shah, M. A. Journal of the American College of Surgeons (2009)