RT Journal Article SR Electronic T1 Ampiginous choroiditis following quadrivalent human papilloma virus vaccine JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 137 OP 139 DO 10.1136/bjo.2009.159293 VO 94 IS 1 A1 Y M Khalifa A1 P M Monahan A1 N R Acharya YR 2010 UL http://bjo.bmj.com/content/94/1/137.abstract AB