Comparison of effectiveness and safety of topical 30% metformin versus 4% hydroquinone in the treatment of epidermal melasma. Journal of Pakistan Association of Dermatologists, [S. l.], v. 34, n. 1, p. 73–79, 2024. DOI: 10.66344/jpad.v34i1.2748. Disponível em: https://www.jpad.com.pk/index.php/jpad/article/view/2748. Acesso em: 27 jul. 2026.