About the Authors

Mohammad Sohail Asghar

Affiliation Danish Headache Center and Department of Neurology, Glostrup Hospital, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2600, Glostrup, Denmark

Lino Becerra

Affiliation P.A.I.N. Group, Boston Children’s Hospital and Center for Pain and the Brain, Harvard Medical School, Boston, Massachusetts, 02453, United States of America

Henrik B. W. Larsson

Affiliation Functional Imaging Unit, Department of Diagnostic, Glostrup Hospital, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2600, Glostrup, Denmark

David Borsook

Affiliation P.A.I.N. Group, Boston Children’s Hospital and Center for Pain and the Brain, Harvard Medical School, Boston, Massachusetts, 02453, United States of America

Messoud Ashina

ashina@dadlnet.dk

Affiliation Danish Headache Center and Department of Neurology, Glostrup Hospital, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2600, Glostrup, Denmark

Competing Interests

The Investigator Initiated Studies Program of Merck & Co., Inc., provided funding towards this study (research grant 33936). There are no patents, products in development or marketed products to declare. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: MSA MA. Performed the experiments: MSA. Analyzed the data: MSA LB HBWL DB MA. Contributed reagents/materials/analysis tools: MSA LB HBWL MA. Wrote the paper: MSA LB HBWL DB MA.