[1] Univ Saarland, Dept Radiotherapy Radiooncol, D-6650 Homburg, Saarland, Germany
[2] Huazhong Univ Sci & Technol, Union Hosp Tongji Med Coll, Ctr Canc, Wuhan 430074, Peoples R China
[3] Univ Saarland, Inst Med Biometr Epidemiol & Med Informat, D-6650 Homburg, Saar, Germany
[4] Univ Saarland, Dept Cardiol, D-6650 Homburg, Saar, Germany
[5] Univ Cologne, Dept Cardiol, Cologne, Germany
[6] Univ Saarland, Dept Neuropathol, Homburg, Saar, Germany