1 Department of Public Health and Infectious Diseases, Sapienza University of Rome, Italy.
2 San Gallicano Dermatological Institute, IRCCS UOSD Clinical Trial Center e Biostatistica e Bioinformatica, Direzione Scientifica, Rome, Italy.
3 Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy.
4 Scientific Library, IRCCS - Regina Elena National Cancer Institute, Rome, Italy.
5 OPI Rome Nursing Boards, Italy.
6 Italian Center of Excellence for Nursing Scholarship, Rome, Italy.
7 Pain Management Clinic, Cristo Re Hospital, Rome, Italy.
8 Pain Management Clinic, Health District S. Caterina della Rosa, Rome, Italy.
9 Pain Management Clinic, S. Giovanni Hospital, Rome, Italy.
10 World Institute of Pain, Winston-Salem, NC, USA.
11 Research Unit, Campus Bio-Medico University, Rome, Italy.
12 Department of Anatomy, Histology, Legal Medicine and Orthopaedics, Sapienza University of Rome, Italy.
13 Department of Health Profession, School of Nursing & Midwifery, AOS Camillo-Forlanini Hospital, Sapienza University, Rome, Italy. Electronic address: roberto.latina@uniroma1.it.