Name Info Provider Link
Health Problems in Pregnancy free resource MedlinePlus Health Information https://medlineplus.gov/healthproblemsinpregnancy.html
subscription/membership/fee required Nature Publishing Group https://doi.org/10.1038/ng.2238
free resource PubMed Central https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22504419/
free resource Europe PubMed Central https://europepmc.org/abstract/MED/22504419