1 West Yorkshire Arrhythmia Service, Leeds General Infirmary, Leeds, United Kingdom.
2 Department of Cardiology, Aga Khan University Hospital, Nairobi, Kenya.
3 Department of Internal Medicine, Gyneco-Obstetric and Pediatric Teaching Hospital/University of Douala, Doula, Cameroon; Department of Cardiology, Arrhythmia Unit, Hopital Le Raincy-Montfermeil, Montfermeil, France. Electronic address: aimebonny@yahoo.fr.