[1] LMU, Walther Straub Inst Pharmakol & Toxikol, D-80336 Munchen, Germany
[2] Eastern Michigan Univ, Dept Chem, Ypsilanti, MI 48197 USA
[3] Univ Surrey, Sch Biol Sci, Mol Toxicol Grp, Guildford GU2 5XH, Surrey, England
[4] GSF, Inst Klin Mol Biol & Tumorgenet, D-81377 Munich, Germany