“Where There is No Echocardiography: an Overview of the Diagnosis of Paediatric Heart Diseases in a New Paediatric Cardiology Unit at the University of Port Harcourt Teaching Hospital” (2024) NIGERIAN JOURNAL OF PAEDIATRICS, 34(1&2), pp. 36–42. Available at: https://njpaediatrics.com/index.php/njp/article/view/573 (Accessed: 18 October 2026).