1. Institute of Virology, Centre for Hygiene and Human Genetics, University of Göttingen, Kreuzbergring 57, 37075 Göttingen, Germany
2. Laboratory Medicine Institute Kassel, Druseltalstraße 61, D-34131 Kassel-Wilhelmshöhe, Germany
3. Advanced Therapies Centre B2, London Clinic Cancer Centre, 22 Devonshire Place, London W1G 6JA, UK