In the registration process there is a section for ‘Institutions’:

This is optional and can be ignored.  But it does serve two purposes, should you not ignore it:

  1. Better links to full-text.  If you are at an institution that subscribes to journals we can use something called a link resolver to link from Trip directly to your institutions full-text (as opposed to the PubMed abstract.  This is a powerful feature but does require a link resolver.  To find out if your institution has one – ask in the library.
  2. Premium membership. If the institution purchases a premium account it can be used to connect users to the premium content/features.

But, to repeat, this can be ignored, it is not essential for your registration.