共 9 条
[3]
COPE C, 1980, AJR, V135, P403
[5]
FERRUCCI JT, 1980, RADIOLOGY, V135, P1
[8]
NAKAYAMA T, 1978, GASTROENTEROLOGY, V74, P554
[9]
SCOTT AJ, 1967, LANCET, V2, P790