title: [Biases in epidemiological studies].
authors: Centro de Investigación en Salud Poblacional, Instituto Nacional de Salud Pública (INSP), Cuernavaca, Morelos, México. mhernan@insp3.insp.mx
authors: M
authors: M
authors: Hernández-Avila
authors: F
authors: F
authors: Garrido
authors: E
authors: E
authors: Salazar-Martínez
mesh_terms: D015982:Bias; D016022:Case-Control Studies; D012107:Research Design; D015983:Selection Bias