| Name | Info | Provider | Link |
|---|---|---|---|
| free resource | GlyGen glycoinformatics resource | https://glygen.org/publication/PubMed/15928241/ | |
| subscription/membership/fee required | Ovid Technologies, Inc. | http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=15928241.ui | |
| subscription/membership/fee required | Silverchair Information Systems | https://academic.oup.com/jcem/article-lookup/doi/10.1210/jc.2005-0570 |