1. Laboratory of Methodology for Clinical Research Department of Oncology Istituto di Ricerche Farmacologiche Mario Negri IRCCS Milan Italy
2. Laboratory for Medical Research and Consumer Involvement Department of Public Health Istituto di Ricerche Farmacologiche Mario Negri IRCCS Milan Italy
3. Secretariat of the International Narcotics Control Board Vienna International Centre Vienna Austria
4. Unit of Pain and Palliative Care Research Department of Oncology Istituto di Ricerche Farmacologiche Mario Negri IRCCS Milan Italy