1 Cochrane Review Group on Drugs and Alcohol, Department of Epidemiology, Lazio Regional Health Service, Via Cristoforo Colombo, 112, 00147 – Rome, Italy
2 Laboratory of Clinical Research Methodology, IRCCS-Mario Negri Institute for Pharmacological Research, Via G. La Masa 19, 20156 Milan, Italy
3 Department of Biomedical Sciences for Health, University of Milan, Via Pascal 36, 20133 Milan, Italy
4 Department of Laboratory Medicine and Pathological Anatomy, Laboratory of Toxicology. Ospedale Civile S. Agostino Estense, Azienda USL of Modena, Italy
5 Laboratory of Regulatory Policies IRCCS-Mario Negri Institute for Pharmacological Research, Via G. La Masa 19, 20156 Milan, Italy