%I BMJ PUBLISHING GROUP %C Vancouver, Canada %D 2019 %O This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. %J SEXUALLY TRANSMITTED INFECTIONS %V 95 %A C Mercer %L discovery10091426 %P A27-A27 %T S16.3 Anatomical sites of infection: Behavioural considerations for STI prevention