External Validation of the ORBIT Bleeding Score and the HAS-BLED Score in Nonvalvular Atrial Fibrillation Patients Using Direct Oral Anticoagulants (Asian Data from the DIRECT Registry) - ScienceDirect
HAS-BLED online calculator | ClinCaseQuest
HAS-BLED score calculator:Amazon.com:Appstore for Android
HAS-BLED Tool – What is the Real Risk of Bleeding in Anticoagulation? - American College of Cardiology