Humagain, M., and A. Dawadi. “Lip Repositioning Surgery: A Newer Paradigm in Periodontal Aesthetics”. Journal of Nepalese Society of Periodontology and Oral Implantology, vol. 2, no. 1, June 2018, pp. 20-22, doi:10.3126/jnspoi.v2i1.23605.