Allami, Risala H., et al. “Genetic Association of Angiotensin-Converting Enzyme 2 ACE-2 (rs2285666) Polymorphism With the Susceptibility of COVID-19 Disease in Iraqi Patients: Http: .www.doi.org 10.26538 Tjnpr V7i2.7”. Tropical Journal of Natural Product Research (TJNPR), vol. 7, no. 2, Feb. 2023, pp. 2346-51, https://tjnpr.org/index.php/home/article/view/1625.