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Response to: Correspondence on: Household use of crop residues and fuelwood for cooking and newborn birth size in rural Bangladesh by Lee et al
  1. Mi-Sun Lee1,
  2. Ki-Do Eum2,
  3. Maitreyi Mazumdar1,3,
  4. David C Christiani1,4
  1. 1Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
  2. 2Department of Civil and Environmental Engineering, Tufts University, Medford, Massachusetts, USA
  3. 3Department of Neurology, Boston Children's Hospital, Boston, Massachusetts, USA
  4. 4Massachusetts General Hospital / Harvard Medical School, Boston, Massachusetts, USA
  1. Correspondence to Dr Mi-Sun Lee, Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA; mslee{at}hsph.harvard.edu

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We thank Das and Janardhanan for their interest in our study on household use of crop residues and fuelwood and birth size outcomes.1 As acknowledged in our article, we collected data on the type of biomass fuels using a questionnaire,2 as did many prior observational studies. In environmental epidemiological studies, questionnaires are often used in exposure assessment, allowing a large sample size and greater statistical power.3 Although the information on the type of cooking fuels using the questionnaire allowed us to assess the association between exposure and outcome, the quantification and the identification of specific exposure are not available. As we discussed, the potential for measurement error using the …

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Footnotes

  • Contributors M-SL drafted the manuscript. M-SL, K-DE, MM and DCC revised the manuscript. All authors read and approved the final manuscript.

  • Funding This work was supported by the National Institute of Environmental Health Sciences (NIEHS) of the National Institutes of Health (NIH) (Grant numbers: R01ES015533, P30ES000002, R01ES023441, K23017437, R01ES026317).

  • Competing interests None declared.

  • Provenance and peer review Commissioned; internally peer reviewed.

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