3
Department of Research Methodology and Information Systems in the Integrative Medicine, University Witten Herdecke Faculty of Medicine, Witten, Nordrhein-Westfalen, Germany
4
Departement of Child and Adolescent Psychiatry, Johannes Gutenberg University Hospital Mainz, Mainz, Rheinland-Pfalz, Germany
,
Stefanie Märzheuser
5
Departement of Pediatric Surgery, Rostock University Medical Center Children and Youth Clinic, Rostock, Mecklenburg-Vorpommern, Germany
,
Reinhard Busse
6
Department of Health Care Management, Technische Universität Berlin, Berlin, Berlin, Germany
,
Ulrike Nimptsch
6
Department of Health Care Management, Technische Universität Berlin, Berlin, Berlin, Germany