Name Info Provider Link
subscription/membership/fee required Atypon https://journals.sagepub.com/doi/10.1177/070674378603100605?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub 0pubmed
Teen Development free resource MedlinePlus Health Information https://medlineplus.gov/teendevelopment.html