Screening for arrhythmias in secondary school students’ in Port Harcourt, Nigeria. NIGERIAN JOURNAL OF PAEDIATRICS, [S. l.], v. 46, n. 2, p. 61–67, 2024. Disponível em: https://njpaediatrics.com/index.php/njp/article/view/101.. Acesso em: 20 jun. 2026.