[1] Univ Med Hosp Tuebingen, Dept Psychosomat Med & Psychotherapy, Internal Med, Osianderstr 5, D-72076 Tubingen, Germany
[2] Otto von Guericke Univ, Dept Psychosomat Med & Psychotherapy, Magdeburg, Germany
[3] Ulm Univ, Med Ctr, Dept Psychosomat Med & Psychotherapy, Ulm, Germany
[4] Ulm Univ, Dept Psychiat 2, Ulm, Germany
[5] BKH Guenzburg, Ulm, Germany