1. Iberoamerican Cochrane Network; Valencia Venezuela
2. Taunton and Somerset NHS Trust; Department of Cardiology; Musgrove Park Taunton Somerset UK TA1 5DA
3. Marilia Medical School; Department of General Internal Medicine and Clinical Epidemiology Unit; Avenida Monte Carmelo 800 Fragata Marilia São Paulo Brazil 17519-030
4. National Institute of Pediatrics; Methodology Research Unit/Neonatology; Insurgentes Sur 3700 - C Col. Insurgentes Cuicuilco, Coyoacan Mexico City Distrito Federal Mexico 04530
5. c/o Cochrane Heart Group; 1282 Marketplace dr Unit 2211 Yorkville Illinois USA 60560
6. Universidad Tecnológica Equinoccial; Facultad de Ciencias de la Salud Eugenio Espejo; Avenida Occidental s/n, y Avenida Mariana de Jesús Edificio Bloque D. Of. Centro Cochrane Quito Ecuador Casilla Postal 17-01-2764