共 25 条
[2]
Beretta G, 1997, P AN M AM SOC CLIN, V16, p259a
[4]
A NEW METHOD OF CLASSIFYING PROGNOSTIC CO-MORBIDITY IN LONGITUDINAL-STUDIES - DEVELOPMENT AND VALIDATION
[J].
JOURNAL OF CHRONIC DISEASES,
1987, 40 (05)
:373-383
[10]
DUCREUX M, 1999, GASTROENTEROL CLIN B, V23, pA108