00463nam a2200169 a 450000500170000002000150001708200190003210000300005110000220008124500380010326000380014130000260017963000310020563000140023663000230025063000200027320251203110956.0  a0471031747  a519.50285bELA  aElandt-Johnson, Regina C.  aJohnson, Norman L  aSurvival models and data analysis  aNew YorkbJohn Wiley & sonsc1999  axvi, 457p.c22cm.bPB  aFailure time data analysis  aMortality  aMedical statistics  aCompeting risks