Name Info Provider Link
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=19373106.ui
free resource NCI CPTAC Assay Portal https://assays.cancer.gov/CPTAC-1474
subscription/membership/fee required Wolters Kluwer https://doi.org/10.1097/IJG.0b013e31819f9330