[1] Royal Infirm Edinburgh NHS Trust, Specialist Virol Ctr, Scottish HPV Reference Lab, Edinburgh EH16 4SA, Midlothian, Scotland
[2] NHS Natl Serv Scotland, Informat Serv Div, Scottish Canc Registry, Edinburgh EH12 9EB, Midlothian, Scotland
[3] Royal Infirm Edinburgh NHS Trust, Dept Pathol, Edinburgh EH16 4SA, Midlothian, Scotland
[4] Glasgow Royal Infirm, Dept Pathol, Glasgow G4 0SF, Lanark, Scotland
[5] Aberdeen Royal Infirm, Dept Pathol, Aberdeen AB25 2ZN, Scotland
[6] Ninewells Hosp, Dept Pathol, Dundee DD1 9SY, Scotland
[7] Monklands Gen Hosp, Dept Cytopathol, Airdrie ML6 OJS, Scotland
[8] Wellcome Trust Clin Res Facil, Edinburgh EH4 2XU, Midlothian, Scotland