Ali, M., A. Mehwish, S. Humayun, I. Shereen, S. Iqbal, and H. Munir. “Pitx3 Gene Polymorphism and Its Association With Parkinson’s Disease In Pakistani Population.”. Pakistan Journal of Physiology, Vol. 16, no. 4, Dec. 2020, pp. 21-23, https://pjp.pps.org.pk/index.php/PJP/article/view/1305.