1. Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, Wolfgang-Pauli-Strasse 10, CH-8093 Zurich, Switzerland
2. Seminar for Statistics, ETH Zürich, Rämistrasse 101, CH-8092 Zurich, Switzerland
3. Laboratorio di Chimica Bioinorganica, Università degli Studi di Firenze, Rm. 188, Via della Lastruccia 3, I-50019 Sesto Fiorentino, Firenze, Italy