Thongnopakun, S. , Pumpaibool, T. , Visanuyothin, S. , Rodjarkpai, Y. and Manwong, M. 2021. Effects of a safe sex program for increasing health literacy intention and practice to prevent pregnancy among undergraduates in Thailand. Journal of Public Health and Development. 19, 1 (Jan. 2021), 141–151.