| Name | Info | Provider | Link |
|---|---|---|---|
| free resource | Elsevier Science | https://linkinghub.elsevier.com/retrieve/pii/S1028-4559(21)00143-1 | |
| Prenatal Testing | free resource | MedlinePlus Health Information | https://medlineplus.gov/prenataltesting.html |
| subscription/membership/fee required | ClinicalKey | https://www.clinicalkey.com/content/playBy/pii?v=S1028-4559(21)00143-1 |