Jamzuri, M., Khayati, N., Widodo, S., Hapsari, E. and Haryanti, F. 2019. Increasing Oxytocin Hormone Levels in Postpartum Mothers Receiving Oketani Massage and Pressure in The GB-21 Acupressure Point. International Journal of Advancement in Life Sciences Research. 2, 1 (Jan. 2019), 22-27.