共 12 条
[2]
Bynum T E, 1970, Gastrointest Endosc, V17, P67
[6]
HEBER R, 1956, LANCET, V2, P1121
[7]
Judd D R, 1966, J Indiana State Med Assoc, V59, P1431
[8]
LERNER S, 1959, JAMA, V255, P1310