Los puntos clave no están disponibles para este artículo en este momento.
Changes in cigarette smoking 1959-1965. E C Hammond, and L GarfinkelCopyRight https://doi.org/10.2105/AJPH.58.1.30 Published Online: August 29, 2011
Hammond et al. (Mon,) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: