First, do no harm.
Hall
A J
AJ
D017848:Blood-Borne Pathogens; D014943:Global Health; D015658:HIV Infections / Q000517:prevention & control / Q000635:transmission; D006525:Hepatitis, Viral, Human / Q000517:prevention & control / Q000635:transmission; D006801:Humans; D007267:Injections / Q000009:adverse effects / Q000592:standards*; D014777:Virus Diseases / Q000517:prevention & control* / Q000635:transmission*