Letter-To-The-Editor In Response To "Tanton C, Et Al. Human Papillomavirus (Hpv) In Young Women In Britain: Population-Based Evidence Of The Effectiveness Of The Bivalent Immunisation Programme And Burden Of Quadrivalent And 9-Valent Vaccine Types. Papillomavirus Res. 2017 Jun;3:36-41.Doi: 10.1016/J.Pvr.2017.01.001"