Vancouver - Journal Articles - Page Range/Numbers
Quoting journal articles in Vancouver style requires (http://www.nlm.nih.gov/bsd/uniform_requirements.html) providing the "page range", i.e. the first and last page numbers of articles. The number of digits in the second part of the page range is limited to those needed for clarity, without repeating digits unnecessarily, e.g. 284-7 NOT 284-287. The zotero Vancouver style provides those "unnecessary" digits. Because in published articles "space is money" an update would help me to shrink my bibliography to the permitted "one page only" :-)
I 'm happy to say, though, that it's one of the features the new CSL which will be implemented in Zotero soonish is able to do:
http://citationstyles.org/downloads/upgrade-notes.html#pages