Pongpunna, Supawinee, Narumol Jarernsiripornkul, and Tongchai Pratipanawatr. 2018. “Attitude towards Usefulness of Patient Information Leaflets Among Ambulatory Patients”. Srinagarind Medical Journal 33 (4):351-58. https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/130300.