Drupal-Bibcite0<style face="normal" font="default" size="100%">Smartphone-based AI-enhanced ECG Detection of Left Ventricular Systolic Dysfunction in Chagas Disease: External Validation in a Resource-limited Setting</style><style face="normal" font="default" size="100%">Smartphone-based AI-enhanced ECG Detection of Left Ventricular Systolic Dysfunction in Chagas Disease: External Validation in a Resource-limited Setting</style>