1. Division of Integrative Health Promotion, Faculty of Social Work and Health, Coburg University of Applied Sciences, Friedrich-Streib-Str. 2, 96450 Coburg, Germany
2. Department Healthy University, Coburg University of Applied Sciences, Friedrich-Streib-Str. 2, 96450 Coburg, Germany
3. Institute for Frontier Areas in Psychology and Mental Health, Wilhelmstr. 3a, 79098 Freiburg, Germany
4. Division of Social Work, Faculty of Social Work and Health, Coburg University of Applied Sciences, Friedrich-Streib-Str. 2, 96450 Coburg, Germany
5. Foundation Humor Hilft Heilen, Dolivostraße 9, 64293 Darmstadt, Germany
6. Neuroscience Research Institute, State University of New York, College at Old Westbury, 223 Store Hill Rd, Old Westbury, NY 11568, USA
7. Division of General Medicine and Primary Care, Beth Israel Deaconess Medical Center, Harvard Medical School, CO-1309, 2nd Floor, Office 204A, 330 Brookline Avenue, Boston, MA 02215, USA