Bio Medical and Life Sciences
Essential Guides
English Writing Lab Guide to Biomedical Writing by Jocelyn Graf
http://hswriting.library.utoronto.ca/index.php/hswriting/issue/current
University of Toronto writing in Health Sciences
http://hswriting.library.utoronto.ca/index.php/hswriting/issue/current
References
Vancouver Style
Uniform Requirements for Manuscripts Submitted to Biomedical Journals:
Writing and Editing for Biomedical Publications
Tips on Vancouver style
http://www.lib.monash.edu.au/tutorials/citing/vancouver.html
APA style is more common in Nursing. Check with your Department.