Name Info Provider Link
subscription/membership/fee required Atypon https://journals.sagepub.com/doi/10.2466/pms.103.2.354-362?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub 0pubmed
Disabilities free resource MedlinePlus Health Information https://medlineplus.gov/disabilities.html