Subjects: SMOKING prevention; CHI-squared test; PRENATAL careSWITZERLAND
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Subjects: POSTNATAL care; COMMUNITY health services; MEDICAL practiceSPAIN
Subjects: PREGNANCY complication risk factors; AGE distribution; ALCOHOLISMROMANIA
Subjects: MALPRACTICE; ATTITUDE (Psychology); CESAREAN sectionROMANIA
Subjects: CHI-squared test; COUNSELING; MENTAL depression
Subjects: PUBLIC health; DIABETES; CLINICAL medicine
Subjects: PREVENTION of communicable diseases; PREVENTION of pregnancy complications; STREPTOCOCCAL disease preventionFRANCE
Subjects: GOVERNMENT agencies; ANALYSIS of variance; COMPUTER softwareCANADA; UNITED States