1.
Azad S, Paul KC, Mafruhah K, Saber BM, Saima UH. Upper lip changes on smiling in the vertical dimensions. J. Bangladesh Coll. Phys. [Internet]. 2026 Feb. 1 [cited 2026 Feb. 3];44(1):17-25. Available from: https://www.banglajol.info/index.php/JBCPS/article/view/87215