Tantrakarnsakul, Kullasap, and Worasuda Yoongthong. 2019. “Development of Mechanism to Solve the Shortage of Essential Controlled Medicines”. Thai Food and Drug Journal 26 (3). Nonthaburi, Thailand:41-53. https://he01.tci-thaijo.org/index.php/fdajournal/article/view/214812.