Bello, S., A. Fatiregun, A. Oyo-Ita, and B. Ikpeme. “Dose-Response Relationship Between Alcohol Use and Blood Pressure Among Drivers of Commercial Vehicles in Calabar, Southern Nigeria”. Journal of Public Health in Africa, vol. 1, no. 1, Aug. 2010, p. JPHIA 2010; 1:e5, doi:10.4081/jphia.2010.e5.