Validating clinical tools for neuropathic pain: should negative studies be thrown out? Reply to Attal and Bouhassira.

aDivision of Neuroscience, Department of Research and Innovation, Oslo University Hospital, Oslo, Norway bFaculty of Medicine, University of Oslo, Oslo, Norway cDepartment of Rehabilitation Science and Health Technology, Oslo Metropolitan University, Oslo, Norway dDepartment of Neurology and Clinical Neurophysiology, Oslo University Hospital, Oslo, Norway *E-mail address: [email protected] (Ø. Dunker) Sponsorships or competing interests that may be relevant to content are disclosed at the end of this article.