| Name | Info | Provider | Link |
|---|---|---|---|
| Childbirth | free resource | MedlinePlus Health Information | https://medlineplus.gov/childbirth.html |
| free resource | PubMed Central | https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/19588315/ | |
| free resource | Europe PubMed Central | https://europepmc.org/abstract/MED/19588315 | |
| subscription/membership/fee required | Wiley | https://doi.org/10.1002/14651858.CD000007.pub2 |