1. Department of Molecular Cell Biology and ImmunologyVU University Medical CenterAmsterdamThe Netherlands
2. Weill Medical CollegeCornell UniversityNew YorkUSA
3. Department of Biological SciencesThe Open UniversityWalton HallMilton KeynesUK
4. Institut CochinDepartement de Biologie CellulaireParisFrance
5. Institute of Molecular PharmacologyBerlinGermany
6. Solvay Pharmaceuticals Research LaboratoriesWeespThe Netherlands