[1] Univ Hosp Cologne, Ctr Mol Med Cologne CMMC, Cologne, Germany
[2] Univ Cologne, Ctr Biochem, Cologne, Germany
[3] Univ Cologne, Cologne Excellence Cluster Cellular Stress Respon, Cologne, Germany
[4] Univ Hosp Cologne, Dept Pediat & Adolescent Med, Cologne, Germany
[5] Univ Hosp Cologne, Inst Pathol, Cologne, Germany
[6] Childrens Hosp Los Angeles, Dev Biol & Regenerat Med Program, Dept Pediat Surg, Saban Res Inst, Los Angeles, CA 90027 USA