Evaluation of Spandan Smartphone-Based Electrocardiogram for Arrhythmia Detection: A Cross-Sectional Study in a Large Patient Cohort. - Mahajan, Sahil; Garg, Salil; Singh, Yogendra; Sharma, Richa; Bhatia, Tanuj; Chandola, Nitin; Agarwal, Deeksha (Anatolian Journal of Cardiology / Anadolu Kardiyoloji Dergisi, 2025)