[1
]Pontificia Universidad Javeriana; Department of Clinical Epidemiology and Biostatistics,
Faculty of Medicine; Cr. 7 #40-62, 2nd floor Bogotá DC Colombia
[2
]Faculty of Medicine, Pontificia Universidad Javeriana; Department of Internal Medicine;
Bogotá Colombia
[3
]Fundacion Cardioinfantil Instituto de Cardiologia; Research Department; Bogota Colombia
[4
]BMJ; BMJ-TAG; Tavistock Square London UK WC1H 9JR