共 16 条
[6]
HALL MH, 1980, LANCET, V2, P78
[7]
SOME FACTORS AFFECTING ATTENDANCE AT ANTE-NATAL CLINICS
[J].
SOCIAL SCIENCE & MEDICINE PART D-MEDICAL GEOGRAPHY,
1981, 15 (3D)
:421-424
[8]
LEVENO KJ, 1985, OBSTET GYNECOL, V66, P599