| Name | Info | Provider | Link |
|---|---|---|---|
| Birth Weight | free resource | MedlinePlus Health Information | https://medlineplus.gov/birthweight.html |
| subscription/membership/fee required | Ovid Technologies, Inc. | http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=20954854.ui | |
| subscription/membership/fee required | De Gruyter | https://www.degruyter.com/document/doi/10.1515/jpm.2010.124 |