RT Journal Article SR Electronic T1 Does brain penetration of anti-HIV drugs matter? JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 1 OP 2 DO 10.1136/sti.76.1.1 VO 76 IS 1 A1 Christina M Marra A1 John Booss YR 2000 UL http://sti.bmj.com/content/76/1/1.abstract AB