Name Info Provider Link
free resource BioMed Central https://bmcpregnancychildbirth.biomedcentral.com/articles/10.1186/s12884-019-2405-5
Health Problems in Pregnancy free resource MedlinePlus Health Information https://medlineplus.gov/healthproblemsinpregnancy.html
free resource PubMed Central https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/31331287/
free resource Europe PubMed Central https://europepmc.org/abstract/MED/31331287