UNAMBA, Norbert Ndubuisi; EDEOGU, Julius Uguru; ORJI, Miriam Ijeoma. The Functional Class and Electrocardiographic Abnormalities in Heart Failure Patients in Southern Nigeria: A Retrospective Observational Study. The Nigerian Health Journal, Nigeria, v. 20, n. 2, p. 44–53, 2020. DOI: 10.60787/tnhj.v20i2.475. Disponível em: https://www.tnhjph.com/index.php/tnhj/article/view/475. Acesso em: 27 oct. 2025.