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Autor Afiliación: Institute of Maternal and Child Research, Faculty of Medicine, University of Chile, Santiago, Chile.
Autor Nombre: Michels, Karin
Autor Afiliación: Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles, USA; Institute for Prevention and Cancer Epidemiology, Faculty of Medicine and Medical Center, University of Freiburg, Freiburg, Germany