title: Understanding calendar rhythm.
authors.forename: D P
authors.initials: DP
authors.lastname: Reyes
mesh_terms: D001208:Asia; D001210:Asia, Southeastern; D003267:Contraception; D003268:Contraception Behavior; D003906:Developing Countries; D005193:Family Planning Services; D012252:Natural Family Planning Methods; D010342:Patient Acceptance of Health Care; D010679:Philippines
keywords: Acceptor Characteristics; Asia; Contraception; Contraceptive Usage; Developing Countries; Family Planning; Family Planning, Behavioral Methods; Method Acceptability; Natural Family Planning; Philippines; Rhythm Method, Calendar; Southeastern Asia