Name | Info | Provider | Link |
---|---|---|---|
subscription/membership/fee required | HighWire | https://www.bmj.com/lookup/pmidlookup?view=long&pmid=22108268 | |
subscription/membership/fee required | Ovid Technologies, Inc. | http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=22108268.ui |