More Groups
Fewer Groups
More People
Fewer People
Mazumdar, M.; Smith, A.; Schwartz, L. H. Journal of Clinical Epidemiology (2004)
Kondagunta, G. V.; Drucker, B.; Schwartz, L.; Bacik, J.; Marion, S.; Russo, P.; Mazumdar, M.; Motzer, R. J. Journal of Clinical Oncology (2004)