International developments.
Engle
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D001445:Bahrain / Q000453:epidemiology; D003906:Developing Countries; D004359:Drug Therapy, Combination; D015658:HIV Infections / Q000188:drug therapy* / Q000453:epidemiology / Q000517:prevention & control*; D006297:Health Services Accessibility; D015994:Incidence; D018671:Needle-Exchange Programs; D012675:Senegal / Q000453:epidemiology; D015819:Substance Abuse, Intravenous