More Groups
Fewer Groups
More People
Fewer People
Sepkowitz, K.; Telzak, E. E.; Armstrong, D. Annals of Internal Medicine (1991)
Fleisher, M.; Winawer, S. J.; Zauber, A. G. Annals of Internal Medicine (1991)
Kemeny, N.; Seiter, K.; Martin, D.; Urmacher, C.; Niedzwiecki, D.; Kurtz, R. C.; Costa, P.; Murray, M. Annals of Internal Medicine (1991)
Sepkowitz, K. A.; Telzak, E. E.; Gold, J. W. M.; Bernard, E. M.; Blum, S.; Carrow, M.; Dickmeyer, M.; Armstrong, D. Annals of Internal Medicine (1991)
Fleisher, M.; Winawer, S. J.; Zauber, A. G.; Smith, C.; Schwartz, M. K.; The National Polyp Study Work Group Annals of Internal Medicine (1991)