1. School of Nursing Science, Witten/Herdecke University, Alfred-Herrhausen-Straße 50, 58455 Witten, Germany
2. School of Didactics and Educational Research in Health Care, Witten/Herdecke University, Alfred-Herrhausen-Straße 50, 58455 Witten, Germany
3. School of Psychology, Ruhr-Universität Bochum, Universitätsstraße 150, 44801 Bochum, Germany
4. Fachhochschule Münster, Corrensstraße 25, 48149 Münster, Germany
5. Alfried Krupp Krankenhaus Rüttenscheid, Alfried-Krupp-Straße 21, 45131 Essen, Germany