This version of the Vancouver style uses a numeric system of in-text referencing. A consecutive number is assigned to each reference as it is cited in the text. If a source is cited again in the text the reference number remains the same.
This guide is based on Patrias K. Citing medicine: the NLM style guide for authors, editors, and publishers [Internet]. 2nd ed. Wendling DL, technical editor. Bethesda (MD): National Library of Medicine (US); 2007 [updated 2009 Oct 21; cited 2011 Feb 18].
Before writing your list of references, check with your tutor or lecturer for the bibliographic style preferred by the School or Department.