More Groups
Fewer Groups
More People
Fewer People
More Years
Fewer Years
Conlon, K. C.; Curtin, J. Journal of the American College of Surgeons (1995)
Russo, P.; Brady, M. S.; Conlon, K.; Hajdu, S. I.; Fair, W. R.; Herr, H. W.; Brennan, M. F. Journal of Urology (1992)