If a filtered resource does not cover a topic, does not apply to your patient, or you want to see what is new since the filtered resources were last updated, you can turn to unfiltered resources – often known as “primary literature.”
When using primary literature, it is up to you to assess its quality, validity and applicability to your patient. Likewise, searching the primary literature can require more time and expertise, which is why filtered resources are a good place to get started. Every primary literature database is a little different. Learn about the database you are searching and how best to search it. Librarians can help you with this.