EKA ZHAKI SAFIRA LUBIS; JUSUF, N. K. Risk Factors Analysis of Premature Canities in Medical Students of Universitas Sumatera Utara Class 2016-2018. Sumatera Medical Journal, [S. l.], v. 3, n. 1, p. 48–58, 2020. DOI: 10.32734/sumej.v3i1.3543. Disponível em: https://idjpcr.usu.ac.id/smj/article/view/3543. Acesso em: 5 aug. 2025.