More Groups
Fewer Groups
Ostrovnaya, I.; Olshen, A. B.; Seshan, V. E.; Orlow, I.; Albertson, D. G.; Begg, C. B. Statistics in Medicine (2010)
Capanu, M.; Orlow, I.; Berwick, M.; Hummer, A. J.; Thomas, D. C.; Begg, C. B. Statistics in Medicine (2008)