1980/12/01 by Jorge E. Chaparro Medina, Jorge E. Medina, Armando Cifuentes +4 · 3 citations
Health Professions · Medicine · Social Sciences · #Child and Adolescent Health #Demography #Environmental health #Ethics and bioethics in healthcare #Family planning #Gender, Labor, and Family Dynamics #Medicine #Natural family planning #Population #Pregnancy #Research methodology #Volunteer
paper · doi:10.1016/s0002-9378(16)32781-8
crossref issued 1980/12/01 · crossref published 1980/12/01 · crossref published-print 1980/12/01 · openalex publication_date 1980/12/01 · openalex created_date 2016/06/24 · crossref created 2016/12/24 · crossref deposited 2025/09/11 · crossref indexed 2025/09/16 · openalex updated_date 2026/07/28