NIGUSSIE, T.; GOBENA, T.; MOSSIE, A. Association between Khat Chewing and Gastrointestinal Disorders: A Cross Sectional Study. Ethiopian Journal of Health Sciences, [S. l.], v. 23, n. 2, p. 123–130, 2013. DOI: 10.4314/ejhs.v23i2. Disponível em: https://www.ajol.info/index.php/ejhs/article/view/91180. Acesso em: 28 sep. 2026.