Evaluating the validity of self-reported smoking in Mexican adolescents
María del Carmen Valladolid-López, Tonatiuh Barrientos-Gutiérrez, Luz Myriam Reynales-Shigematsu, James F Thrasher, Ingris Peláez-Ballestas, Eduardo Lazcano-Ponce, Mauricio Hernández-Ávila
BMJ Open Oct 2015, 5 (10) e007485; DOI: 10.1136/bmjopen-2014-007485