1. University of Bern Department of Chemistry, Biochemistry and Pharmaceutical Sciences Freiestrasse 3 3012 Bern SWITZERLAND
2. UCLA Department of Chemistry and Biochemistry 607 Charles E. Young Drive East Box 951569 90095 Los Angeles UNITED STATES
3. University of Bern: Universitat Bern Department of Chemistry, Biochemistry and Pharmaceutical Sciences Freiestrasse 3 3012 Bern SWITZERLAND