Parvathy Ghosh, Sarika K, Nihal Jayaprakash, Sapna Varma N K, and Ajith V V, “Anxiety and perceptions on the impact of COVID-19 pandemic among orthodontic patients visiting a tertiary care center: A Cross-sectional study”, Int. J. Res. Pharm. Sci., vol. 11, no. (SPL 1), pp. 1487–1493, Dec. 2020.