“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 98, no. 1 (March 4, 2026). Accessed May 1, 2026. https://www.pagepressjournals.org/aiua/article/view/14744.