Assessment of liver disease by non-invasive methods in perinatally infected Brazilian adolescents and young adults living with Human Immunodeficiency Virus (HIV) Aida de Fátima Thomé Barbosa Gouvêa; Roberto Carvalho Filho; Daisy Maria Machado; Fabiana Bononi do Carmo; Suenia Vasconcelos Beltrão; Laurene Sampaio; Maria isabel de Moraes-Pinto; Regina Célia de Menezes Succi;