aDepartment of Internal and Integrative Medicine, Evang, Kliniken Essen-Mitte, Faculty of Medicine, University of Duisburg-Essen, Essen, Germany
bNational Centre for Naturopathic Medicine, Southern Cross University, Lismore, Australia
cAustralian Research Centre in Complementary and Integrative Medicine (ARCCIM), Faculty of Health, University of Technology Sydney, Sydney, Australia
*Corresponding author. Faculty of Medicine, University of Duisburg-Essen, Department of Internal and Integrative Medicine, Evang. Kliniken Essen-Mitte, Am Deimelsberg 34a 45276 Essen, Germany. Tel.:+49 201 174-25550; fax:+49 201 174-25000. E-mail address: [email protected] (D. Anheyer).
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