共 13 条
[2]
GRIFFITHS J D, 1956, Ann R Coll Surg Engl, V19, P241
[3]
HANNAN JR, 1964, AMER J ROENTGENOL RA, V91, P826
[4]
KELLOCK TD, 1957, LANCET, V2, P660
[7]
MARSTON A, 1966, GUT, V7, P1, DOI 10.1136/gut.7.1.1