Regidor Enrique, Martínez David, Santos Juana M, Calle María E, Ortega Paloma, Astasio Paloma
Department of Preventive Medicine and Public Health, Universidad Complutense de Madrid, Spain.
Soc Sci Med. 2012 Aug;75(4):752-3. doi: 10.1016/j.socscimed.2011.09.041. Epub 2011 Dec 13.