| Name | Info | Provider | Link |
|---|---|---|---|
| Vitamin D Deficiency | free resource | MedlinePlus Health Information | https://medlineplus.gov/vitaminddeficiency.html |
| subscription/membership/fee required | Ovid Technologies, Inc. | http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=37317881.ui | |
| subscription/membership/fee required | Wiley | https://doi.org/10.1111/jcpe.13834 | |
| Full text from | free resource | Hokkaido University Collection of Scholarly and Academic Papers: HUSCAP | https://hdl.handle.net/2115/93090 |