#	Key concepts
#1	hiv Infections[mh] or HIV seropositivity[mh] or acquired immunodeficiency syndrome[mh] or HIV[tiab] or AIDS[tiab] or acquired immuno deficienc*[tiab]
#2	sexual behavior[mh] or sexual partners[mh] or reproductive behavior[mh] or contraception behavior[mh] or Contraception[mh] or contraceptive devices[mh] or circumcision, male[mh] or sexually transmitted diseases[mh] or contraception[tiab] or contraceptive*[tiab] or sexual*[tiab] or sex[tiab] or multiple partner*[mh] or condom[tiab] or condoms[tiab] or circumcision[tiab]
#3	computer systems[mh] or telecommunications[mh] or Information Services[mh] or medical records systems, Computerized[mh] or computer*[tiab] or communication network*[tiab] or internet[tiab] or web[tiab] or www[tiab] or telecommunication[tiab] or email[tiab] or electronic mail[tiab] or e‐mail[tiab] or cellular phone[tiab] or cell phone[tiab] or ict[tiab] or information communication technolog*[tiab] or telemedicine[tiab] or tele‐medicine[tiab] or telehealth[tiab] or tele‐health[tiab] or personal digital Assistant[tiab] or pda[tiab] or video*[tiab] or remote consultation*[tiab] or electronic health record*[tiab] OR electronic medical record*[tiab] OR electronic nursing record*[tiab] OR electronic patient record*[tiab] OR EHR[tiab] OR EMR[tiab] or informatics[tiab] or CD‐Rom[tiab]
#4	clinical trial[pt:noexp] or randomized controlled trial[pt] or controlled clinical trial[pt] or evaluation studies[pt] or comparative study[pt] or intervention studies[mh] or evaluation studies[mh:noexp] or program evaluation[mh:noexp] or random allocation[mh] or random*[tiab] or double blind*[tiab] or controlled trial*[tiab] or clinical trial*[tiab] or pretest*[tiab] or pre test*[tiab] or posttest*[tiab] or post test*[tiab] or prepost*[tiab] or pre post*[tiab] or controlled before*[tiab] or "before and after"[tiab] or interrupted time*[tiab] or time serie*[tiab] or intervention*[tiab]
#5	(#1 OR #2) AND #3 AND #4