Can we rule out reverse causality in St Lawrence et al. (2006) study?
Muula
Adamson S
AS
D017954:Africa South of the Sahara / Q000453:epidemiology; D004866:Equipment Contamination; D005260:Female; D015658:HIV Infections / Q000635:transmission*; D006801:Humans; D007267:Injections / Q000009:adverse effects* / Q000295:instrumentation*; D009339:Needles / Q000009:adverse effects; D013594:Syringes / Q000009:adverse effects