More Groups
Fewer Groups
Patel, J. D.; Bach, P. B.; Kris, M. G. JAMA - Journal of the American Medical Association (2004)
Bach, P. B.; Kattan, M. W.; Thornquist, M. D.; Kris, M. G.; Tate, R. C.; Barnett, M. J.; Hsieh, L.; Begg, C. B. JNCI: Journal of the National Cancer Institute (2003)