Udomratn, Thitichaya, Chanon Kongkamol, and Jinda Preechaveerakul. 2021. “Factors That Affect on Drug Quality Problems at Songklanagarind Hospital”. Thai Food and Drug Journal 28 (2). Nonthaburi, Thailand:27-40. https://he01.tci-thaijo.org/index.php/fdajournal/article/view/250316.