Johnbull, Jumbo, et al. “Tuberculosis Register Audit: A Comparison of TB Clinic, Niger Delta University Teaching Hospital and Tuberculosis and Leprosy Hospital, Bayelsa State, South-South, Nigeria”. Niger Delta Journal of Medical Sciences (NDJMS), vol. 3, no. 1, Sept. 2020, pp. 39-47, https://ndjms.ndu.edu.ng/index.php/home/article/view/46.