RT Journal Article SR Electronic T1 Location, location, location: what can geographic information science (GIS) offer sexual health research? JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 442 OP 443 DO 10.1136/sextrans-2014-051695 VO 90 IS 6 A1 Simms, I A1 Gibin, M A1 Petersen, J YR 2014 UL http://sti.bmj.com/content/90/6/442.abstract AB