- Correspondence to Dr Patricia Alfaro-de la Torre, Chronic Pain Unit, Hospital Joan XXII, Tarragona, Spain;
- Received August 30, 2018
- Accepted August 30, 2018
- First published January 23, 2019.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.