High prevalence of hepatitis B virus subgenotypes A1 and D4 in Maranhão state, Northeast Brazil - Barros, Lena Maria Fonseca; Gomes-Gouvêa, Michele Soares; Kramvis, Anna; Mendes-Corrêa, Maria Cássia Jacintho; Santos, Alexsandro dos; Souza, Letícia Alana Barros; Santos, Max Diego Cruz; Carrilho, Flair José; Domicini, Arnaldo de Jesus; Pinho, João Renato Rebello; Ferreira, Adalgisa de Souza Paiva (Infection, Genetics and Evolution, 2014)