1. Department of Molecular Pharmacology, Groningen Research Institute of Pharmacy (GRIP); University of Groningen; Groningen The Netherlands
2. German Cancer Research Center (DKFZ) and National Center of Tumordiseases (NCT); Heidelberg Germany
3. Institute of Pharmacology and Clinical Pharmacy, Biochemisch-Pharmakologisches Centrum Marburg; Philipps University of Marburg; Marburg Germany
4. Institute of Physiological Chemistry; Philipps University of Marburg; Marburg Germany