[1] Univ Hosp, Marburg, Germany
[2] Klin Reinhardshoehe, Bad Wildungen, Germany
[3] Univ Hosp, Tubingen, Germany
[4] BC Canc Agcy, Vancouver, BC, Canada
[5] Staedt Kliniken, Oldenburg, Germany
[6] Univ Hosp Bonn, Bonn, Germany
[7] Univ Hosp, Munster, Germany
[8] Oberschwabenklin, Ravensburg, Germany
[9] Univ Hosp, Hamburg, Germany