| Name | Info | Provider | Link |
|---|---|---|---|
| subscription/membership/fee required | Ingenta plc | https://www.ingentaconnect.com/openurl?genre=article&issn=&volume=34&issue=2&spage=186&aulast=Sjölander | |
| subscription/membership/fee required | Ovid Technologies, Inc. | http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=36722800.ui | |
| subscription/membership/fee required | Wolters Kluwer | https://doi.org/10.1097/EDE.0000000000001567 |