Name Info Provider Link
free resource BioMed Central https://bmcpregnancychildbirth.biomedcentral.com/articles/10.1186/s12884-019-2391-7
Teen Health free resource MedlinePlus Health Information https://medlineplus.gov/teenhealth.html
free resource PubMed Central https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/31277585/
free resource Europe PubMed Central https://europepmc.org/abstract/MED/31277585