1. Institute for Biochemistry IIUniversity of Frankfurt Hospital Frankfurt Germany
2. Aventis, Disease Group Cardiovascular Agents D-65926 Frankfurt Germany
3. Institute for Anatomy and Cell BiologyJustus-Liebig-University D-35385 Giessen Germany
4. Institute for Physiological Chemistry and PathobiochemistryJohannes Gutenberg-University D-55099 Mainz Germany