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aCardiovascular Department bInternal Medicine Department, Section of Pulmonology cInternal
Medicine Department, King Faisal Specialist Hospital and Research Center dCardiology
Unit, King Abdul Aziz University Hospital, Jeddah eCardiac Center, King Abdullah Medical
City, Makkah fCardiovascular Department, Armed Forces Hospital Southern Region, Khamis
Mushayt, Kingdom of Saudi Arabia gCardiology Department, Zayed Military Hospital hDivision
of Adult Cardiology, College of Medicine, Institute of Cardiac Sciences, Mohammed
Bin Rashid University of Medicine and Health Sciences iDivision of Adult Cardiology,
College of Medicine, Institute of Cardiac Sciences, Sheikh Khalifa Medical City, Abu
Dhabi, UAE jAnesthesia Department kEmergency Department, King Faisal Specialist Hospital
and Research Centre, Riyadh, Kingdom of Saudi Arabia lDepartment of Cardiology, Division
of Cardiology, Baystate Medical Center, Tufts University School of Medicine, Springfield,
Massachusetts, USA.