Chitpitaklert, Surasit, Sumonmal Manusirivithaya, Supawan Sathorn, Weerasak Anutaungkoon, Gunn Limkool, Wijitra Chaopanon, Aeumporn Kanjanarungsichai, Jinda Rojanamatin, Pornpimom Massakulpan, Thanathip Tantivattana, and Attapol Kerdarunsuksri. 2011. “Why There Has Been No Service Delivery Unit in Thai Public Health Service ?”. Vajira Medical Journal : Journal of Urban Medicine 53 (3):273-82. https://he02.tci-thaijo.org/index.php/VMED/article/view/415.