Jha, N, SR Niraula, DD Biral, and R Bohara. “Trends of Diphtheria, Pertussis and Tetanus Cases in Nepal”. Health Renaissance 11, no. 1 (February 10, 2013): 47–53. Accessed December 26, 2024. https://nepjol.info./index.php/HREN/article/view/7602.