Genetic diversity of hepatitis B virus (HBV) in Madagascar Andriamandimby SF, Lo Presti A, Lai A, Olive MM, Angeletti S, De Florio L, Cella E, Razafindramparany M, Ravalohery JP, Andriamamonjy S, Gioffrè S, Zehender G, Mottini G, Ciccozzi M, Heraud JM Journal of medical virology 88 (2016)