Egger Matthias, Ekouevi Didier K, Williams Carolyn, Lyamuya Rita Elias, Mukumbi Henri, Braitstein Paula, Hartwell Tyler, Graber Claire, Chi Benjamin H, Boulle Andrew, Dabis François, Wools-Kaloustian Kara
Division of International and Environmental Health, Institute of Social and Preventive Medicine (ISPM), University of Bern, Switzerland.
Int J Epidemiol. 2012 Oct;41(5):1256-64. doi: 10.1093/ije/dyr080. Epub 2011 May 18.