共 30 条
[2]
Breslow N.E., 1980, STAT METHODS CANC RE, P192
[3]
THE RELATIONSHIP OF TUBAL INFERTILITY TO BARRIER METHOD AND ORAL-CONTRACEPTIVE USE
[J].
JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION,
1987, 257 (18)
:2446-2450
[5]
INTRAUTERINE-DEVICES AND ACUTE PELVIC INFLAMMATORY DISEASE
[J].
JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION,
1976, 235 (17)
:1851-1853
[6]
Fleiss JL, 1981, STATISTICAL METHODS, P61
[8]
HILTON AL, 1974, BRIT J VENER DIS, V50, P1
[10]
BARRIER-METHOD CONTRACEPTIVES AND PELVIC INFLAMMATORY DISEASE
[J].
JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION,
1982, 248 (02)
:184-187