Serological markers of hepatitis B infection in infants presenting for their first immunization. NIGERIAN JOURNAL OF PAEDIATRICS, [S. l.], v. 40, n. 3, p. 248–253, 2024. Disponível em: https://www.njpaediatrics.com/index.php/njp/article/view/436.. Acesso em: 18 nov. 2024.