[1] Univ Cologne, Fac Med, Inst Med Sociol Hlth Serv Res & Rehabilitat Sci, Chair Hlth Serv Res, Cologne, Germany
[2] Univ Cologne, Univ Hosp Cologne, Cologne, Germany
[3] Univ Hosp Bonn, Ctr Hlth Commun & Hlth Serv Res CHSR, Dept Psychosomat Med & Psychotherapy, Bonn, Germany
[4] Ctr Integrated Oncol Aachen Bonn Cologne Dusseldor, Cologne, Germany
[5] Maastricht Univ, Med Ctr, Dept Clin Pharm & Toxicol, Maastricht, Netherlands
[6] Maastricht Univ, CARIM Sch Cardiovasc Dis, Maastricht, Netherlands
[7] Univ Bonn, Univ Hosp Bonn, Dept Psychosomat Med & Psychotherapy, Bonn, Germany
[8] Heinrich Heine Univ Dusseldorf, Med Fac, Clin Inst Psychosomat Med & Psychotherapy, Dusseldorf, Germany
[9] Heinrich Heine Univ Dusseldorf, Univ Hosp Dusseldorf, Dusseldorf, Germany
[10] Heinrich Heine Univ Dusseldorf, Inst Hlth Serv Res & Hlth Econ, Med Fac, Ctr Hlth & Soc, Dusseldorf, Germany
[11] Heinrich Heine Univ Dusseldorf, Inst Hlth Serv Res & Hlth Econ, German Diabet Ctr, Leibniz Ctr Diabet Res, Dusseldorf, Germany
[12] MediStatistica, Wuppertal, Germany
[13] Rhein Westfal TH Aachen, Fac Med, Dept Hematol, Oncol, Aachen, Germany