AZAD, Shimonti; PAUL, Kajal Chandra; MAFRUHAH, Kazi; SABER, Bayezid Maruf; SAIMA, Umme Habiba. Upper lip changes on smiling in the vertical dimensions. Journal of Bangladesh College of Physicians and Surgeons, [S. l.], v. 44, n. 1, p. 17–25, 2026. DOI: 10.3329/jbcps.v44i1.87215. Disponível em: https://www.banglajol.info/index.php/JBCPS/article/view/87215. Acesso em: 3 feb. 2026.