Siziya, S., Ntata, P. R., Rudatsikira, E., Makupe, C. M., Umar, E., & Muula, A. S. (2008). Sex differences in prevalence rates and predictors of cigarette smoking among in-school adolescents in Kilimanjaro, Tanzania. Tanzania Journal of Health Research, 9(3), 190–195. https://doi.org/10.4314/thrb.v9i3.14329