Hanindiya, Beta, and Nurasima Kurniati Damanik. 2022. “The Relationship of husband’s Knowledge and Attitude to Male Operating Method Contraception Participation at Ujung Padang Health Center, Simalungun District”. Science Midwifery 10 (4):3543-47. https://doi.org/10.35335/midwifery.v10i4.968.