1. Cardiology Department, Mohamed VI University Hospital of Tangier , Street of Rabat, Km 17, BP 398, 90100 Tangier , Morocco
2. Abdelmalek Essaadi University Faculty of Medicine and Pharmacy, Street of Rabat, Km 17, 90100 Tangier , Morocco
3. Paediatric Cardiology Department, Hassan II University Hospital of Fez , Avenue Hassan II, BP 1835, Atlas, 30050 Fez , Morocco