Kohsaka S, Nishimura S, Kumamaru H. Letter by Kohsaka 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:e28-e29.
PMID: 38976603
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