Giri, Dhirendra K, P Kundapur, K M Bhat, and I K Maharjan. “Betel Nut Chewing Associated With Severe Periodontitis”. Health Renaissance 12, no. 1 (January 28, 2015): 57–60. Accessed April 18, 2024. https://www.nepjol.info/index.php/HREN/article/view/11990.