Ko D, Kim DH, Singer DE. Letter by Ko et al Regarding Article, "Safety of Switching From a Vitamin K
Antagonist to a Non-Vitamin K Antagonist Oral Anticoagulant in Frail Older
Patients With Atrial Fibrillation: Results of the FRAIL-AF Randomized Controlled
Trial". Circulation 2024;150:e25-e26.
PMID: 38976608
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