1. Institute of Veterinary Physiology; Vetsuisse Faculty; University of Zürich (UZH); Winterthurerstrasse 260 CH-8057 Zürich Switzerland
2. Zürich Centre for Integrative Human Physiology (ZIHP); University of Zürich; Zürich Switzerland
3. Zürich Centre for Clinical Studies; Vetsuisse Faculty; University of Zürich; Zürich Switzerland
4. School of Pharmacy; Pharmacology Unit; University of Camerino; Camerino Italy
5. Intramural Research Program; National Institutes of Health/National Institute on Drug Abuse; Baltimore MD USA