Belfort, M. G. S.; Silva, C. X. R.; Nunes, S. E. A.; Sallet, L. A. P.; de Sousa , M. J. A.; da Silva, S. A. Characterization of the Use of Psychoactive Substances Used by Truck Drivers Traveling on a Section of BR-010, in the State of Maranhão, Brazil. Editora 2023.