About the Authors

Bart Witjes

Roles Formal analysis, Methodology, Writing – original draft, Writing – review & editing

Affiliation Center for pain Medicine, Department of Anesthesiology, Erasmus University Medical Center, Rotterdam, the Netherlands

Martijn P. A. Starmans

Roles Methodology, Writing – original draft, Writing – review & editing

Affiliations Department of Radiology & Nuclear Medicine, Erasmus University Medical Center, Rotterdam, the Netherlands, Department of Pathology, Erasmus University Medical Center, Rotterdam, the Netherlands

Frank J.P.M. Huygen

Roles Writing – review & editing

Affiliation Center for pain Medicine, Department of Anesthesiology, Erasmus University Medical Center, Rotterdam, the Netherlands

Cecile C. de Vos

Roles Conceptualization, Supervision, Writing – review & editing

c.devos@erasmusmc.nl

Affiliation Center for pain Medicine, Department of Anesthesiology, Erasmus University Medical Center, Rotterdam, the Netherlands

Competing Interests

I have read the journal’s policy and the authors of this manuscript have the following competing interests: FH reports grants and personal fees from Abbott and from Saluda Medical, personal fees from Pfizer and Grünenthal, and independent support from The Netherlands Organisation for Health Research and Development. This does not alter our adherence to PLOS ONE policies on sharing data and materials.