Serum cotinine levels are a reliable marker of tobacco use. Few studies have validated questionnaires assessing smoking and exposure to environmental tobacco smoke (ETS) against serum levels. We undertook such a study in industrial workers in India.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/validation-self-reported-smoking-status-measuring-serum-cotinine-levels-indian
[2] http://admin.indiaenvironmentportal.org.in/category/author/p-jeemon
[3] http://admin.indiaenvironmentportal.org.in/category/author/s-agarwal
[4] http://admin.indiaenvironmentportal.org.in/category/author/l-ramakrishnan-et-al
[5] http://admin.indiaenvironmentportal.org.in/category/journal/national-medical-journal-india
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/smoking
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tobacco
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/workers
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/research
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india