AL-HAJJ, Wadhah; HWAITI, Hisham; SHAMALA, Anas; AL-AZAZI, Hamza; ALWESABI, Mohammed. Association of Khat chewing, smoking, age and sex with periodontal status among Yemeni adults. Brazilian Dental Science, São José dos Campos, Brazil, v. 23, n. 1, p. 8 p., 2020. DOI: 10.14295/bds.2020.v23i1.1861. Disponível em: https://ojs.ict.unesp.br/index.php/cob/article/view/1861. Acesso em: 23 aug. 2025.