'Frontloading' or 'halfing' among injecting drug users in London.
Hunter
G M
GM
Donoghoe
M C
MC
D004305:Dose-Response Relationship, Drug; D006679:HIV Seropositivity / Q000150:complications; D006304:Health Status; D006801:Humans; D008131:London / Q000453:epidemiology; D012309:Risk-Taking; D015819:Substance Abuse, Intravenous / Q000453:epidemiology*; D006113:United Kingdom / Q000453:epidemiology