1. Molecular, Cellular, and Pharmacobiology Section, Institute for Pharmaceutical Biology, University of Bonn, 53115 Bonn, Germany.
2. Departments of Developmental Biology and Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
3. Pharmaceutical Institute, Pharmaceutical Chemistry I, University of Bonn, 53121 Bonn, Germany.
4. Pharmacology and Toxicology Section, Institute of Pharmacy, University of Bonn, 53121 Bonn, Germany.
5. CNS Research, UCB Pharma, 1420 Braine l’Alleud, Belgium.
6. Institute of Pharmacology and Toxicology, University of Bonn, 53121 Bonn, Germany.
7. Institute for Pharmaceutical Biology, University of Bonn, 53115 Bonn, Germany.
8. PharmaCenter, University of Bonn, 53119 Bonn, Germany.