共 29 条
[1]
AGRAWAL NM, 1985, DIG DIS SCI S, V30, P164
[2]
AKDAMAR K, 1982, AM J GASTROENTEROL, V77, P902
[4]
BRAND DL, 1985, DIGESTIVE DISEASES S, V30, P147
[5]
BRIGHTASARE P, 1986, DIGESTIVE DISEASES S, V31, P63
[6]
CAMERON AJ, 1975, MAYO CLIN PROC, V50, P565
[9]
FLEISS JL, 1979, STATISTICAL METHODS, P119
[10]
GILBERT DA, 1984, GASTROENTEROLOGY, V86, P339