Human papillomavirus infection and cervical cytology in women screened for cervical cancer in the United States, 2003-2005.
Datta SD, Koutsky LA, Ratelle S, Unger ER, Shlay J, McClain T, Weaver B, Kerndt P, Zenilman J, Hagensee M, et al. Ann Intern Med. 2008 Apr 1; 148(7):493-500.