Lianawati, Lianawati, and Menik Sri Daryanti. 2019. “The Correlations of Method Between the First and the Subsequent Childbirth at PKU Muhammadiyah Yogyakarta Hospital in 2016”. International Journal of Health Science and Technology 1 (1):96-100. https://doi.org/10.31101/ijhst.v1i1.949.