1. Hoffmann B, Moebus S, Michalsen A, Paul A, Spahn G, Dobos GJ et al (2004) Health-related control belief and quality of life in chronically ill patients after a behavioral intervention in an integrative medicine clinic—an observational study. Forsch Komplementarmed Klass Naturheilkd 11(3):159–170
2. Lauche R, Cramer H, Moebus S, Paul A, Michalsen A, Langhorst J et al (2012) Results of a 2-week inpatient stay at the department for internal and integrative medicine: an observational study. Evid Based Complement Alternat Med 2012:875874
3. Saha FJ, Brüning A, Barcelona C, Büssing A, Langhorst J, Dobos G et al (2016) Integrative medicine for chronic pain: a cohort study using a process-outcome design in the context of a department for internal and integrative medicine. Medicine (Baltimore) 95(27):e4152