Zun Xiang, et al. “Association Between Polymorphism of Dopamine D2 Receptor Genes and Therapeutic Effect of Domperidone in Functional Dyspepsia”. Turkish Journal of Gastroenterology, vol. 26, no. 1, July 2019, pp. 1-5, https://turkjgastroenterol.avesjournals.com/index.php/tjg/article/view/3081.