the full journal title for it when formatting papers using an output style that is configured to use full journal titles. If you are importing references from other databases , e.g. Biological Abstracts or PsycInfo, the reference will probably have the full journal title, as most databases no longer use abbreviated journal titles. However, as long as this title matches one of the titles in the medical journals term list, EndNote will be able to identify the Index Medicus abbreviation for it when formatting papers using an output style that is configured to use those abbreviations. When you are inputting references manually , you will have to use the full journal title, as you are unlikely to know the Index Medicus abbreviation. Again, as long as this title matches one of the titles in the medical journals term list, EndNote will be able to identify the Index Medicus abbreviation for it when formatting papers using an output style that is configured to use those abbreviations. The abbreviations used by Medline/PubMed are not the only abbreviations used by journal editors. Check the ?instructions for authors? of the journal to which you are submitting your paper. Even if you follow all the instructions given above, there will still be occasional problems with journal titles when you are formatting papers with EndNote. a. Using an output style configured to use ?Abbreviation 2?, some journals still appear in full This means that there is no entry for that journal abbreviation in your journals term