1. Department of Biomedical Sciences for Health; University of Milan; Milan Italy
2. Medical Staff Directory; San Luca Hospital, Auxologic Institute; Milan Italy
3. Cochrane Italy, Department of Diagnostic, Clinical and Public Health Medicine; University of Modena and Reggio Emilia; Modena Italy
4. Department of Epidemiology; Lazio Regional Health Service - ASL Roma1; Rome Italy
5. Cochrane Italy and IRCCS Mario Negri Institute for Pharmacological Research; Milan Italy
6. Department of Surgery, Oncology and Gastroenterology; University of Padova, Istituto Oncologico Veneto IRCCS; Padova Italy