BMJ 2014;348:g1340 doi: [removed]bmj.g1340 (Published 10 March[removed]Page 1 of 13 Research - Vein - Document - PDFSEARCH.IO

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BMJ 2014;348:g1340 doi: [removed]bmj.g1340 (Published 10 March[removed]Page 1 of 13 ResearchAdd to Reading List