Name Info Provider Link
Blood Transfusion and Donation free resource MedlinePlus Health Information https://medlineplus.gov/bloodtransfusionanddonation.html
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=30807343.ui
subscription/membership/fee required Wolters Kluwer https://doi.org/10.1097/CNQ.0000000000000252