[1] Univ Hosp Erlangen, Dept Psychosomat Med & Psychotherapy, Schwabachanlage 6, D-91054 Erlangen, Germany
[2] Univ Hosp Essen, Dept Psychosomat Med & Psychotherapy, Essen, Germany
[3] Univ Hosp Munster, Dept Transplant Med, Munster, Germany
[4] Univ Hosp Essen, Dept Gen Visceral & Transplantat Surg, Essen, Germany
[5] HNO Klin, Lukaskrankenhaus Neuss, Neuss, Germany