共 37 条
[1]
[Anonymous], 1990, SAS/STAT User's Guide
[6]
A NEW METHOD OF CLASSIFYING PROGNOSTIC CO-MORBIDITY IN LONGITUDINAL-STUDIES - DEVELOPMENT AND VALIDATION
[J].
JOURNAL OF CHRONIC DISEASES,
1987, 40 (05)
:373-383
[7]
Chauhan TS, 2003, CAN MED ASSOC J, V169, P1068
[10]
DEVESA S, 1999, DHEW PUBL