| Name | Info | Provider | Link |
|---|---|---|---|
| subscription/membership/fee required | Elsevier Science | https://linkinghub.elsevier.com/retrieve/pii/S0029784401017586 | |
| Health Problems in Pregnancy | free resource | MedlinePlus Health Information | https://medlineplus.gov/healthproblemsinpregnancy.html |
| subscription/membership/fee required | Wolters Kluwer | https://doi.org/10.1016/s0029-7844(01)01758-6 |