More Groups
Fewer Groups
More People
Fewer People
Jules-Elysee, K. M.; Stover, D. E.; Zaman, M. B.; Bernard, E. M.; White, D. A. Annals of Internal Medicine (1990)
Emanuel, D.; Cunningham, I.; Jules-Elysee, K.; Brochstein, J. A.; Kernan, N. A.; Laver, J.; Stover, D.; White, D. A.; Fels, A.; Polsky, B.; more... Annals of Internal Medicine (1988)