sentences:  They have existed for over a century; the names "Vancouver system" or "Vancouver style" have existed since 1978.The latest version of the latter is "Citing Medicine", per the "References > Style and Format" section of the ICMJE Recommendations for the Conduct, Reporting, Editing, and Publication of Scholarly Work in Medical Journals.These recommendations, the "Vancouver Convention" and "Vancouver guidelines", have a much broader scope than only the citation style