Paediatric Association of Nigeria (PAN) Immunization Guidelines: An Update (2023). NIGERIAN JOURNAL OF PAEDIATRICS, [S. l.], v. 51, n. 1, p. 55–74, 2024. DOI: 10.4314/njp.v51i1.08. Disponível em: https://www.njpaediatrics.com/index.php/njp/article/view/1173.. Acesso em: 30 apr. 2026.