Butt, Fareeha, Raza ur Rahman, Ambreen Qamar, and Shazia Nazar. “Levels of Brain Derived Neurotrophic Factor (BDNF) in Patients With Major Depressive Disorder and Its Relation to Coping Strategies”. Pakistan Journal of Physiology 16, no. 4 (December 31, 2020): 24–28. Accessed April 19, 2024. https://pjp.pps.org.pk/index.php/PJP/article/view/1207.