This $200 iPhone Case Is An FDA-Approved EKG Machine Co.Design, huffingtonpost.com Most iPhone cases just protect your phone from drops. If you’re getting fancy, it may have a fisheye camera lens or a screen-printed back. But what about diagnosing coronary heart disease, arrhythmia, or congenital heart defects? The… http://flip.it/tkpwY Related articles EPI Life: World’s first…