More Groups
Fewer Groups
More People
Fewer People
Schwartz, G. K.; Luke, J.; Dickler, M.; Schneider, B. P.; Tiersten, A.; Callahan, L.; Darby, C. H.; Ogden, A. K.; George, C.; Davis, T. W. European Journal of Cancer (2011)
Bach, P. B.; Mirkin, J. N.; Luke, J. J. Health Affairs (2011)