Table 3.

Search Strategy

1	(Hepatitis C or HCV).mp. or *Hepatitis C/
2	transmi$.mp. or *Disease transmission/ or *Virus Transmission/ or *Infection risk/
3	(contaminat$ or cross-contaminat$ or crossinfect$ or cross-infect$).mp. or *Equipment Contamination/
4	seroconver$.mp. or *Seroconversion/
5	(behavio?r modification or risk reduc$).mp. or *Risk reduction/ or *Behavior modification/
6	((inject$ or risk) adj1 (behavio?r or practice$)).mp. or *High risk behavior/ or *Risk taking behavior/ or *Risk taking/ or *Risk-taking/ or *Risk Factor/ or *Risk factors/
7	sharing.mp.
8	(needle exchange$ or syringe exchange$ or harm reduction).mp. or *Harm Reduction/ or *Needle-Exchange Programs/
9	((intravenous or inject$ or substance$ or drug$) adj1 (paraphe?nalia or equipment or ap?aratus)).mp.
10	(spoon$ or cooker$ or filter$ or cotton$ or water or stericup$).ti,ab,tw. indirect.mp.
11	("substance$ use$" or "substance$ abuse$" or "substance$ misus$" or "substance$ depend$" or "substance$ addict$" or "drug$ use$" or "drug$ abuse$" or "drug$ misus$" or "drug$ depend$" or "drug$ addict$").mp. or *Substance Abuse, Intravenous/ or *Substance-Related Disorders/ or *Intravenous Drug Usage/ or *Drug Abuse/ or *Drug addiction/ or *Drug dependency/ or *Substance Abuse, Intravenous/ or *Intravenous Drug Users/ or *Substance Abusers/ or *Substance Dependence/ or *Intravenous Drug Abuse/ or *Drug abuse/ or *Drug dependence/
12	((1 and (or/2-4)) or 5 or 6 or ((or/9-11) and 7)) and 8 and 12
13	Limit to English language, human subjects and year = "1989 - Current"