More Groups
Fewer Groups
More People
Fewer People
Begg, C. B.; Cramer, L. D.; Hoskins, W. J.; Brennan, M. F. JAMA - Journal of the American Medical Association (1999)
Orlow, I.; Drobnjak, M.; Zhang, Z. F.; Lewis, J.; Woodruff, J. M.; Brennan, M. F.; Cordon-Cardo, C. JNCI: Journal of the National Cancer Institute (1999)