Factors associated with spontaneous HBsAg clearance in chronic hepatitis B patients followed at a university hospital - Ferreira, Sandro da Costa; Chachá, Silvana Gama Florencio; Souza, Fernanda Fernandes; Teixeira, Andreza Correa; Santana, Rodrigo de Carvalho; Villanova, Marcia Guimarães; Zucoloto, Sérgio; Ramalho, Leandra Naíra Zambelli; Perdona, Gleici da Silva Castro; Passos, Afonso Dinis Costa; Martinelli, Ana de Lourdes Candolo (Annals of Hepatology, 2014)