共 21 条
[1]
BERGGREN T, 1974, GASTROENTEROLOGY, V67, P149
[2]
CHASSON A L, 1960, Tech Bull Regist Med Technol, V30, P207
[3]
DREILING DA, 1974, AM J GASTROENTEROL, V61, P290
[4]
GAMBILL EE, 1963, JAMA-J AM MED ASSOC, V186, P130
[6]
LESSER PB, 1975, GASTROENTEROLOGY, V68, P636