Duru, Chika O, Josephat M Chinawa, Igoche D Peter, Ibrahim Aliyu, and Fidelia Bode-Thomas. 2020. “Prevalence of Valvar Regurgitation in Nigerian Children With Structurally Normal Hearts Using Colour Doppler Echocardiography”. Journal of Cardiovascular Medicine and Cardiology 7 (3):262-67. https://doi.org/10.17352/2455-2976.000149.