| Authors: |
Marshall G; School of Public Health, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile. guillermo.marshall@uc.cl.; Department of Statistics, Faculty of Mathematics, Pontificia Universidad Católica de Chile, Santiago, Chile. guillermo.marshall@uc.cl., Tapia JL; Department of Neonatology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile.; Red de Salud UC CHRISTUS, Santiago, Chile., Dominguez A; School of Public Health, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile., Fabres J; Department of Neonatology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile.; Red de Salud UC CHRISTUS, Santiago, Chile., González A; Department of Neonatology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile.; Red de Salud UC CHRISTUS, Santiago, Chile., D'Apremont I; Department of Neonatology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile.; Neonatal Unit, Hospital Dr. Sotero del Río, Santiago, Chile., Mariani G; Department of Pediatrics, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina., Herbozo C; Department of Neonatology, Centro Hospitalario Pereira Rossell, Universidad de la República, Montevideo, Uruguay., Silvera F; Universidad Peruana Cayetano Heredia, Hospital Cayetano Heredia, Lima, Perú., Vaz C; Department of Neonatology, Centro Hospitalario Pereira Rossell, Universidad de la República, Montevideo, Uruguay. |