共 5 条
[2]
FISK NM, 1990, EARLY HUM DEV, V24, P181
[3]
EVIDENCE-BASED MEDICINE - A NEW APPROACH TO TEACHING THE PRACTICE OF MEDICINE
[J].
JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION,
1992, 268 (17)
:2420-2425
[4]
EFFECTIVE CARE IN PREGNANCY AND CHILDBIRTH
[J].
BRITISH JOURNAL OF OBSTETRICS AND GYNAECOLOGY,
1990, 97 (11)
:967-969
[5]
1992, MATERNITY SERVICES