Determinants of self-reported smoking and misclassification during pregnancy, and analysis of optimal cut-off points for urinary cotinine: A cross-sectional study
Fecha de publicación:
2013
Versión del editor:
Citación:
BMJ Open, 3(1), (2013); doi:10.1136/bmjopen-2012-002034
ISSN:
Identificador local:
20121814