EBSCO eBook Clinical Collection has over 3,200 titles related to Nursing and Medicine.
A select list of some titles in the collection:
CDC - Center for Disease Control and Prevention
National Center for Health Statistics - Statistical information on diseases, births, deaths and infant and child health
PubMed - Over 17 million citations in MEDLINE, PreMEDLINE and other related databases, with links to participating online journals; by the U.S. National Library of Medicine
WebMD - Website with health information (HONcode certified)