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  1. pdfNLM Technical Bulletin, no.249-257 
    https://www.nlm.nih.gov/.../nlmarchives/techbull/249-257-1990.pdf
    ... 3 TI - The impact of the needle and syringe-exchange programme in Amsterdam on injecting risk behaviour. ... Health and Hu/man Services United States Occupational Safety an/d Health Administration Vitamin B 12 16, ...