Khwanmueang, P. ., Chunuan, S. ., & Thitimapong, B. . (2020). Effect of Childbirth Preparation Program with Continuous Labor Support on Labor Pain of First-Time Teenage Pregnant Women. Nursing Journal of The Ministry of Public Health, 30(3), 115–127. Retrieved from https://he02.tci-thaijo.org/index.php/tnaph/article/view/248456