[1] Univ Med Ctr Hamburg Eppendorf, Dept Med Psychol, Martinistr 52, D-20246 Hamburg, Germany
[2] Univ Med Ctr Hamburg Eppendorf, Ctr Oncol 2, Med Clin & Polyclin, Martinistr 52, D-20246 Hamburg, Germany
[3] Univ Hamburg, Hamburg Ctr Hlth Econ, Esplanade 36, D-20354 Hamburg, Germany
[4] Univ Med Ctr Hamburg Eppendorf UKE, Univ Canc Ctr Hamburg UCCH, Canc Epidemiol Grp, Martinistr 52, D-20246 Hamburg, Germany
[5] Inst Hlth Serv Res Dermatol & Nursing, Hamburg, Germany