Name | Info | Provider | Link |
---|---|---|---|
subscription/membership/fee required | Ovid Technologies, Inc. | http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=21775842.ui | |
free resource | PubMed Central | https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21775842/ | |
free resource | Europe PubMed Central | https://europepmc.org/abstract/MED/21775842 | |
subscription/membership/fee required | Wolters Kluwer | https://doi.org/10.1097/AOG.0b013e318224d4d2 |