1. Department of Biomedicine, Faculty of Medicine, University of Porto, Porto, Portugal
2. Chronic Pain Center-Anesthesiology Department, Centro Hospitalar do Porto, Porto, Portugal
3. National Observatory for Pain (NOPain), Porto, Portugal
4. Institute for Molecular and Cell Biology (IBMC), University of Porto, Porto, Portugal
5. Department of Community Medicine, Information and Health Decision Sciences (MEDCIDS), Faculty of Medicine, University of Porto, Porto, Portugal
6. Centre for Health Technology and Services Research (CINTESIS), University of Porto, Porto, Portugal