TY  - JOUR
A1  - Schumacher, M.
A1  - Olschewski, M.
A1  - Schmoor, C.
T1  - The impact of heterogeneity on the comparison of survival times
Y1  - 1987
DO  - 10.1002/sim.4780060708
JF  - Statistics in Medicine
VL  - 6
IS  - 7
SP  - 773
EP  - -784

ER  -