[1] Univ Klinikum Koln BMBF 01KN0706, Innere Med Klin 1, LCGC, Ctr Integrierte Onkol CIO Koln Bonn, Cologne, Germany
[2] Univ Cologne, Fak Med, Cologne, Germany
[3] Max Planck Inst Neurol Res, Klaus Joachim Zulch Lab, Max Planck Gesell, D-50931 Cologne, Germany
[4] Univ Klinikum Koln, Innere Med Klin 1, LCGC, Ctr Integrierte Onkol CIO Koln Bonn, Cologne, Germany
[5] Lungenklin Merheim, Cologne, Germany