Subjects: *INTERVIEWING; *PRIMARY health care; *STATISTICAL samplingBRAZIL
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Subjects: *ANALYSIS of variance; *INTERVIEWING; *RESEARCH methodologyBRAZIL
Subjects: *FAMILIES & psychology; *INTERVIEWING; *MATERNAL health servicesBRAZIL
Subjects: *ACCELEROMETERS; *EXPERIMENTAL design; *INTERVIEWINGBRAZIL
Subjects: *ANALYSIS of variance; *INCOME; *INTERVIEWINGBRAZIL
Subjects: *SOCIAL isolation; *HEALTH equity; *INTERVIEWINGBRAZIL
Subjects: *AIDS diagnosis; *DIAGNOSIS of HIV infections; *SYPHILIS treatmentVENEZUELA; BRAZIL