Application of the "1-2-3-4-day" rule to stroke severity at baseline versus at 24 h to start direct oral anticoagulant for atrial fibrillation within 7 days from symptom onset. - Cappellari, Manuel; Emiliani, Andrea; Zivelonghi, Cecilia; Micheletti, Nicola; Tomelleri, Giampaolo; Bonetti, Bruno (Neurological Sciences, 2023)