Name Info Provider Link
subscription/membership/fee required Elsevier Science https://linkinghub.elsevier.com/retrieve/pii/S0035-3787(14)00983-7
Health Problems in Pregnancy free resource MedlinePlus Health Information https://medlineplus.gov/healthproblemsinpregnancy.html
subscription/membership/fee required Masson (France) http://www.em-consulte.com/retrieve/pii/S0035-3787(14)00983-7