共 4 条
[1]
ASPINALL DL, 1964, BMJ, V2, P1178
[2]
BIGARD MA, 1979, GASTROENTEROLOGY, V77, P1307
[3]
RAGINS H, 1974, SURG GYNECOL OBSTET, V138, P554
[4]
TAYLOR EW, 1981, GASTROENTEROLOGY, V81, P1