Vancouver style is often used in medicine and defined here:
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 2011 Sep 15; cited 2015 April 18].
Available from: http://www.nlm.nih.gov/citingmedicine
COMMA_NAMES => USE_COMMA_AS_NAME_SEPARATOR_IN_OUTPUT
Klaus-Hendrik Wolf