1. Unit of Cancer Epidemiology; Scientific Institute of Public Health Brussels, and University of Antwerp; Antwerp Belgium
2. International Agency for Research on Cancer; Lyon France
3. Department of Clinical and Molecular Pathology, AML; Sonic Healthcare; Antwerp Belgium
4. International HPV Reference Center, Department of Laboratory Medicine and Department of Medical Epidemiology & Biostatistics; Karolinska Institutet; Stockholm Sweden