Existential Genomics: Effects of Multimodal Rehabilitation and Integrative Care on Patients With Chronic Pain

Using a comprehensive prospective clinical study design, the investigators intend to compare changes in health-related markers in patients with chronic widespread pain (CWP), undergoing one of two intervention "packages" of multimodal health care, namely anthroposophical integrative care (AIC) or standard care (SC), respectively. AIC combines evidence-based conventional care with complementary/alternative (CAM) treatments. As markers, the investigators will use indicators of drug utilization and sick leave, as well as constructs mirroring possible changes in psychological and existential factors and genomic stability (such as telomere length and telomerase levels).