Understanding calendar rhythm.
Reyes
D P
DP
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
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