Tamaraemumoemi O, Johnbull J. Prevalence of Prolonged QRS Duration and Associated Factors among Heart Failure Patients in a Tertiary Healthcare Facility in Bayelsa State. NDJMS. 2020;3(1):7-17. Accessed December 31, 2025. https://ndjms.ndu.edu.ng/index.php/home/article/view/47