RT Journal Article SR Electronic T1 Developments in the field of HIV estimates: methods, parameters and trends JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP i1 OP i2 DO 10.1136/sextrans-2012-050885 VO 88 IS Suppl 2 A1 Stanecki, Karen A1 Garnett, Geoff P A1 Ghys, Peter D YR 2012 UL http://sti.bmj.com/content/88/Suppl_2/i1.abstract AB