High and sustained HPV-16 and 18 antibody levels through 6.4 years in women vaccinated with Cervarix™ (GSK HPV-16 / 18 AS04 vaccine) - Wheeler, C M; Teixeira, J; Romanowski, B
ESPID (European Society for Paediatric Infectious Diseases. Graz, Austria: May 13–17; 2008)