Khat chewing, poly-substance use, and lower urinary tract symptoms: a cross-sectional analysis among Yemeni medical university students. Archivio Italiano di Urologia e Andrologia, [S. l.], v. 98, n. 1, 2026. DOI: 10.4081/aiua.2026.14744. Disponível em: https://www.pagepressjournals.org/aiua/article/view/14744. Acesso em: 1 may. 2026.