RT Journal Article SR Electronic T1 Human papillomavirus March 2019 JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 300 OP 300 DO 10.3949/ccjm.86c.05001 VO 86 IS 5 A1 Robert Lichtenberg YR 2019 UL http://www.ccjm.org/content/86/5/300.1.abstract AB