Needle-exchange programmes in the USA.
Ward
K A
KA
Newlands
M
M
Bullock
D W
DW
D000163:Acquired Immunodeficiency Syndrome / Q000635:transmission; D004739:England; D006509:Hepatitis B / Q000453:epidemiology / Q000635:transmission; D006801:Humans; D018671:Needle-Exchange Programs; D015819:Substance Abuse, Intravenous; D014481:United States