共 57 条
[1]
[Anonymous], 1982, Lancet, V2, P1323
[3]
BRAYKO CM, 1983, GASTROINTEST ENDOSC, V29, P159
[7]
CRANER GE, 1975, GASTROINTEST ENDOSC, V22, P105
[8]
DICKMAN MD, 1976, SURG GYNECOL OBSTET, V42, P173