Alile Solomon.O, and Bello Moses.E. “Diagnosing Chronic Obstructive Pulmonary Disease (COPD) Using Bayesian Belief Network”. International Journal of Computer Engineering in Research Trends, vol. 7, no. 6, June 2020, pp. 1-12, https://www.ijcert.org/index.php/ijcert/article/view/584.