O.E Johnson, E.I Akpanekpo, E.M Okonna, S.E Adeboye, and A.J Udoh. 2017. “The Prevalence and Factors Affecting Psychoactive Substance Use Among Undergraduate Students in University of Uyo, Nigeria”. Journal of Community Medicine & Primary Health Care 29 (2):11-22. https://jcmphc.org/index.php/jcmphc/article/view/96.