1. 1. Site Containing the full explanation for and downloads of the Open Source, Collaborative Consumer Health Vocabulary. This is open to any one who is interested.

  2. 2. Site of the Unified Medical Library System® Knowledge Sources. You MUST register with the UMLS before you can use this site.

  3. 3. Site dedicated to the Assisted Vocabulary Update of the CHV. You MUST register with the AVU site to access it.