[1] Heinrich Heine Univ, Inst Biochem, D-40225 Dusseldorf, Germany
[2] Heinrich Heine Univ, Dept Otorhinolaryngol & Head Neck Surg, D-40225 Dusseldorf, Germany
[3] Saarland Univ, Ctr Bioinformat, D-66123 Saarbrucken, Germany
[4] Univ Washington, Sch Pharm, Dept Med Chem, Seattle, WA 98105 USA
[5] Univ Duisburg Essen, Univ Childrens Hosp Essen, Dept Pediatr 3, D-45147 Essen, Germany