Gypsyamber D'Souza, Aimee R. Kreimer, Raphael Viscidi, Michael Pawlita, Carole Fakhry, Wayne M. Koch, William H. Westra, Maura L. Gillison,
Case-control study of human papillomavirus and oropharyngeal cancer. The New England Journal of Medicine. ,vol. 356, pp. 1944- 1956 ,(2007) ,
10.1056/NEJMOA065497