Cofiño Rafael, Prieto Miguel, Suárez Oscar, Malecki Kristen
Public Health Directorate, Asturias Regional Ministry of Health, Spain.
Department of Population Health Science, University of Wisconsin, Madison, Wisconsin, USA.
J Epidemiol Community Health. 2014 Dec;68(12):1109-11. doi: 10.1136/jech-2014-203883. Epub 2014 Sep 4.