[1] Univ Duisburg Essen, LVR Univ Hosp Essen, Clin Psychosomat Med & Psychotherapy, Essen, Germany
[2] Univ Hosp Essen, Comprehens Canc Ctr Essen, Essen, Nordrhein Westf, Germany
[3] Friedrich Alexander Univ Erlangen Nurnberg, Univ Hosp Erlangen, Dept Psychosomat Med & Psychotherapy, Erlangen, Germany
[4] Eberhard Karls Univ Tubingen, Univ Hosp Tubingen, Dept Psychosomat Med & Psychotherapy, Tubingen, Baden Wurttembe, Germany
[5] Univ Hosp Tubingen, Comprehens Canc Ctr Tubingen Stuttgart, Tubingen, Germany