| Name | Info | Provider | Link |
|---|---|---|---|
| subscription/membership/fee required | Ovid Technologies, Inc. | http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=17075421.ui | |
| subscription/membership/fee required | Wiley | https://doi.org/10.1097/01.mlg.0000237440.51542.81 |