About the Authors

Sara Landgren

Affiliation Department of Pharmacology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden

Jeffrey A. Simms

Affiliation Ernest Gallo Clinic and Research Center, University of California San Francisco, Emeryville, California, United States of America

Dag S. Thelle

Affiliation Department of Biostatistics, Institute of Basic Medical Science, University of Oslo, Oslo, Norway

Elisabeth Strandhagen

Affiliation School of Public Health and Community Medicine, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden

Selena E. Bartlett

Affiliation Ernest Gallo Clinic and Research Center, University of California San Francisco, Emeryville, California, United States of America

Jörgen A. Engel

Affiliation Department of Pharmacology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden

Elisabet Jerlhag

elisabet.jerlhag@pharm.gu.se

Affiliation Department of Pharmacology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden

Competing Interests

Authors Elisabet Jerlhag and Jörgen A. Engel are owners in a company holding a patent regarding treatment of chemical addiction by administering a compound which blocks ghrelin action. This does not alter the authors' adherence to the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: SL JAE EJ. Performed the experiments: SL JAS EJ. Analyzed the data: SL JAS EJ. Contributed reagents/materials/analysis tools: SL JAS DST ES SEB JAE EJ. Wrote the paper: SL JAS DST ES SEB JAE EJ.