共 28 条
[1]
[Anonymous], 1987, Lancet, V2, P1351
[2]
[Anonymous], 1988, Br Med J (Clin Res Ed), V296, P316
[4]
Canadian Cooperative Study Group, 1978, N Engl J Med, V299, P53
[6]
CARSON SN, 1981, SURGERY, V90, P1084