1. University of Groningen, Department of Drug Design, A. Deusinglaan 1, 9713 AV Groningen (The Netherlands) http://www.drugdesign.nl
2. Universitätsklinikum Frankfurt, Theodor‐Stern‐Kai 7, 60590 Frankfurt (Germany)
3. University of Pittsburgh, 200 Lothrop Street, Pittsburgh, PA 15261 (USA)