Changes in the social gradient in tobacco use in Argentina: Evidence from the 2005 and 2009 National Risk Factor Surveys

Fernando De Maio, PhD1, Bruno Linetzky2 and Daniel Ferrante3
(1)DePaul University, Chicago, IL, (2)Ministerio de Salud de la Nacion, Buenos Aries, Argentina, (3)Ministerio de Salud de la Nacion, Buenos Aires, Argentina