Choompon, Chanpen, Sunisa Sunghlor, and Jurairat Khonglormyati. 2017. “Development of Warfarin Safety Monitoring Network in Phra Nakhon Si Ayutthaya Province”. Journal of Health Science of Thailand 23 (3):445-52. https://thaidj.org/index.php/JHS/article/view/704.