Journal Article
                        
                        Boyer, Sylvie, Fabienne  Marcellin, Pierre  Ongolo-Zogo, Severin-Cecile  Abega, Robert  Nantchouang, Bruno  Spire, and Jean-Paul  Moatti.  
"Financial barriers to HIV treatment in Yaounde, Cameroon: first results of a national cross-sectional survey." Bulletin of the World Health Organization 87, no. 4 (2009): 279-287.