Vancouver (Uniform Reguirements...)
From the NLM (updated Feb 2016) journals names are to use the NLM abbreviation. Zotero is spelling out the entire name.
https://www.nlm.nih.gov/bsd/uniform_requirements.html
https://www.nlm.nih.gov/bsd/uniform_requirements.html
https://www.zotero.org/support/kb/journal_abbreviations
I am using Vancouver style on a paper but I want to introduce all the authors, not only 6. How can I do it?