Those links that I think are especially valuable are marked in red. The NLM is the world's largest research library in a single scientific and professional field. It contains bibliographic citations and author abstracts from more than 3,900 current biomedical journals published in the United States and 70 foreign countries and has more than 9 million records dating back to 1966.
Coverage is worldwide, but most records are from English-language sources or have English abstracts.
For example, you can search for all new citations about diabetes, and abstracts of these articles will arrive by e-mail every week or every month at your choice. Each is databased so next time the search is run only new citations are mailed out. The follow-up searches are then run weekly or monthly, according to the frequency you select. The upgrade also provides translation services in real-time for up to 5K of data. You can receive the citations requested in English, French, Spanish, German, Italian, or Portuguese.