More Groups
Fewer Groups
More People
Fewer People
Jarnagin, W. R.; Fong, Y.; Ky, A.; Schwartz, L. H.; Paty, P. B.; Cohen, A. M.; Blumgart, L. H. Journal of the American College of Surgeons (1999)
D'Angelica, M.; Brennan, M. F.; Fortner, J. G.; Cohen, A. M.; Blumgart, L. H.; Fong, Y. Journal of the American College of Surgeons (1997)