title: Failed phlebotomy? Perhaps it's the site used.
authors: Children's Kidney Centre, University Hospital of Wales, Cardiff CF14 4XW, UK smithgc@cardiff.ac.uk.
authors: Graham C
authors: GC
authors: Smith
mesh_terms: D006801:Humans; D018962:Phlebotomy / Q000379:methods* / Q000592:standards*; D017410:Practice Guidelines as Topic; D017211:Treatment Failure