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The Pediatric Forum |

Observations on Power-Line Magnetic Fields Associated With Asthma in Children

Joseph D. Brain, ScD; Robert Kavet, ScD; Peter A. Valberg, PhD
Arch Pediatr Adolesc Med. 2012;166(1):97-99. doi:10.1001/archpedi.166.1.97-b.
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Li et al1 report an association between childhood asthma and maternal magnetic field exposure of 2 mG or more during pregnancy, based on a single day of personal magnetic field (40-800 Hz) measurement. While we have a common interest in understanding the causes and prevention of asthma, we offer the following concerns.

Correspondence: Dr Valberg, Gradient, 20 University Rd, Cambridge, MA 02138 (pvalberg@gradientcorp.com).

Author Contributions:Study concept and design: Brain, Kavet, and Valberg. Analysis and interpretation of data: Brain and Kavet. Drafting of the manuscript: Brain, Kavet, and Valberg. Critical revision of the manuscript for important intellectual content: Brain and Kavet. Statistical analysis: Valberg. Administrative, technical, and material support: Brain and Kavet. Study supervision: Brain.

Financial Disclosure: None reported.

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January 1, 2012
De-Kun Li, MD, PhD; Hong Chen, MPH; Roxana Odouli, MSPH
Arch Pediatr Adolesc Med. 2012;166(1):97-99. doi:10.1001/archpedi.166.1.98.
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