1. Regional health authority of Emilia-Romagna; SaPeRiDoc, Primary health care, general medicine, planning and development of health services; Bologna Italy
2. Emilia-Romagna Regional health authority; SaPeRiDoc, Primary health care, general medicine, planning and development of health services; Bologna Italy
3. Regional agency for health and social care of Emilia-Romagna; Control of infectious disease Unit; Bologna Italy
4. University of Modena and Reggio Emilia; Italian Cochrane Centre, Department of Diagnostic, Clinical and Public Health Medicine; Via del Pozzo 71 Modena Italy 41124
5. World Health Organisation; Policy, Access and Use (PAU), Department of Essential Medicines and Health Products; Avenue Appia 20 Geneva Switzerland 1211 GENEVA 27