About the Authors

Holger Cramer

h.cramer@kliniken-essen-mitte.de

Affiliation Department of Internal and Integrative Medicine, Kliniken Essen-Mitte, Faculty of Medicine, University of Duisburg-Essen, Essen, Germany

Romy Lauche

Affiliation Department of Internal and Integrative Medicine, Kliniken Essen-Mitte, Faculty of Medicine, University of Duisburg-Essen, Essen, Germany

Hoda Azizi

Affiliation Department of Complementary Medicine, Mashhad University of Medical Sciences, Mashhad, Iran

Gustav Dobos

Affiliation Department of Internal and Integrative Medicine, Kliniken Essen-Mitte, Faculty of Medicine, University of Duisburg-Essen, Essen, Germany

Jost Langhorst

Affiliation Department of Internal and Integrative Medicine, Kliniken Essen-Mitte, Faculty of Medicine, University of Duisburg-Essen, Essen, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: HC RL JL. Performed the experiments: HC RL HA. Analyzed the data: HC. Contributed to the writing of the manuscript: HC RL GD JL.