Woolf-King, S. E., Steinmaus, C. M., Reingold, A. L. and Hahn, J. A. (2013) “An update on alcohol use and risk of HIV infection in sub-Saharan Africa: Meta-analysis and future research directions”, The International Journal of Alcohol and Drug Research, 2(1), pp. 99-110. doi: 10.7895/ijadr.v2i1.45.