More Groups
Fewer Groups
More People
Fewer People
Steinhagen, E.; Shia, J.; Markowitz, A. J.; Stadler, Z. K.; Salo-Mullen, E. E.; Zheng, J.; Lee-Kong, S. A.; Nash, G. M.; Offit, K.; Guillem, J. G. Journal of the American College of Surgeons (2012)