Sangpudsa, A., P. Puengpean, T. Sangkamanee, and U. Bunsirichai. “Effectiveness of the Control of Source of Venereal Diseases by Providing Transportation for Female Sex-Workers for Regular Check-up at STD&Amp;AIDS Center, Ratchaburi”. Journal of Health Science of Thailand, vol. 4, no. 1, Mar. 1995, pp. 19-27, https://thaidj.org/index.php/JHS/article/view/6670.