Crespi, V.; Maio, R. C.; Veronesi, G.; Gianfagna, F.; Taborelli, S.; Ferrario, M. M. Workplace Drug Testing on Urine Samples: Evidence for Improving Efficacy of a First-Level Screening Programme. Med Lav 2015, 106 (5), 374-385. https://doi.org/10.23749/mdl.v106i5.4328.