1 Preventive Medicine and Public Health Department, School of Medicine, University of Navarra, Pamplona, Spain. Electronic address: Javier.montero.arredondo@gmail.com.
2 Preventive Medicine and Public Health Department, School of Medicine, University of Navarra, Pamplona, Spain; IdiSNA, Instituto de Investigación Sanitaria de Navarra, Pamplona, Spain; CIBER de Fisiopatología de la Obesidad y la Nutrición, Instituto de Salud Carlos III, Madrid, Spain.