Retraction of: "What can I do for my low back pain? The Work In Progress questionnaire!"

This article has been retracted by agreement between the authors, Editors and Publisher. The author responsible for managing the ethics committee's approval (B.R.) acknowledges full responsibility for the absence of the requested contact information for the local ethics committee, which was also not included in the official approval documentation. The other authors were not involved in this aspect and bear no responsibility for this omission.