[1] UNSW Sydney, Kirby Inst, Sydney, NSW, Australia
[2] Macquarie Univ, Fac Med & Hlth Sci, Sydney, NSW, Australia
[3] Univ Bristol, Sch Social & Community Med, Bristol, Avon, England
[4] Univ Calif San Diego, Div Infect Dis & Global Publ Hlth, San Diego, CA 92103 USA
[5] Assembly Biosci, San Francisco, CA USA
[6] Gilead Sci Inc, 353 Lakeside Dr, Foster City, CA 94404 USA
[7] UNSW Sydney, Ctr Social Res Hlth, Sydney, NSW, Australia