Institution: | 1. Department of Arrhythmia and Cardiac Pacing, Cardiocentro Pediátrico “William Soler”, 100 y Perla, Boyeros, CP 10800, Havana, Cuba 2. Department of Radiology, Cardiocentro Pediátrico “William Soler”, Havana, Cuba 3. Department of Pediatric Cardiology, Cardiocentro Pediátrico “William Soler”, Havana, Cuba
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