Evaluating the trends and impact of COVID-19 on illicit drug and benzodiazepine use in drivers: A retrospective large-scale study based on oral fluid testing. - Blanco-Ces, Miriam; Lendoiro, Elena; Cruz, Angelines; Cobo-Golpe, María; López-Rabuñal, Ángela; de-Castro-Ríos, Ana (Drug & Alcohol Dependence, 2026)