Sampling Matters: The Effect of ECG Frequency on Deep Learning-Based Atrial Fibrillation Detection. - Arjan Mahmuod; Adrian Rod Hammerstad; Muzaffar Yousef; Yngve Sebastian Heill; Jonas Isaksen; Jørgen K. Kanters; Pål Halvorsen; Vajira Thambawita (CoRR, 2026)