RT Journal Article SR Electronic T1 Does sickle cell disease protect against HIV/AIDS? JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 533 OP 533 DO 10.1136/sextrans-2012-050613 VO 88 IS 7 A1 Stephen Obaro YR 2012 UL http://sti.bmj.com/content/88/7/533.abstract AB