Name Info Provider Link
subscription/membership/fee required Atypon https://royalsocietypublishing.org/doi/10.1098/rspb.1994.0122?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub 0pubmed
Infectious Diseases free resource MedlinePlus Health Information https://medlineplus.gov/infectiousdiseases.html