共 30 条
[1]
AARDOOM HA, 1982, BRIT J VENER DIS, V58, P359
[2]
BARLOW D, 1976, BRIT J VENER DIS, V52, P326
[3]
BARLOW D, 1978, LANCET, V1, P761
[5]
BRORSON JE, 1973, BRIT J VENER DIS, V49, P452
[7]
Colton T., 1974, STAT MED, P151
[8]
CROSS RC, 1971, HSMHA HEALTH REP, V86, P990, DOI 10.2307/4594368