Khairi, Abdalla A. B., Aisha A. Abdelkareem, and Bushra Elhusein. “Factors Associated With Spirit Possession: A Cross Cultural Systematic Literature Review”. Innovations in Global Health Professions Education (April 10, 2019). Accessed September 29, 2022. https://journal.innohealthed.com/index.php/ighpe/article/view/81.