The Mayo Clinic's first clinic abroad, in the UAE's emirate of Dubai, is closing its doors in Dubai Healthcare City. The HealthCare City, a $5.3 billion healthcare free zone, is facing delays as the emirate struggles financially. With too few patients for its one cardiologist in Dubai and barely able to break even, the Mayo Clinic is closing its medical practice there. Instead, the clinic will revert back to a regional office that attracts local patients to its Minnesota hospital, the Wall Street Journal reports.