Name Info Provider Link
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=21790561.ui
free resource Wiley https://onlinelibrary.wiley.com/doi/10.1111/j.1528-1167.2011.03178.x
Cited by Patents in free resource The Lens - Patent Citations https://www.lens.org/lens/search/patent/list?q=citation_id:21790561