This is the Vancouver style for referencing, used at the Univerity of Portsmouth within the School of Pharmacy and Biomedical Sciences and the Radiography departments.
This guide is modelled on Citing Medicine: The NLM Style Guide for Authors, Editors, and Publishers (2nd edition). You may wish to consult this source directly for additional information or examples.
No. If you want to reference a website in your text you give it the next running number on your list just like any other recoverable source. If you wish to refer to it by name, try to match the start of the reference for that Web page as it appears in your bibliography, e.g.
Your bibliography gives:
National Library for Health [Internet]. London: NHS; c2008 [cited 2008 Sep 12]. Available from: http://www.library.nhs.uk
In the body of your work you could write "The National Library for Health (16) states that....";
but equally you could say "Information on an official Internet site (16) included advice that ...."
Although the number is the key to locating the reference in your bibliography it is also good practice to show consistency. Giving different details will cause confusion to your reader.