It is a good idea to start with Article Quick Search. You will be searching nearly all the library's databases at once. If you have a narrow topic or a particular article in mind, your approach will be different.
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Full text access to over 120 publications in 100+ specialty areas. Exclusive access to the New England Journal of Medicine (NEJM). Coverage 1860 - current. Journal access limited to 1 or 2 simultaneous users.