Article Information
vol. 23 no. 131 36-39
PubMed
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History
- Received November 29, 2013
- Accepted December 22, 2013
- Published online February 28, 2014.
Copyright & Usage
©ERS 2014
ERR articles are open access and distributed under the terms of the Creative Commons Attribution Non-Commercial Licence 3.0.
Author Information
- C. Robert Horsburgh Jr⇑
- C.R. Horsburgh Jr, Dept of Epidemiology, Boston University School of Public Health, 715 Albany Street, T3E, Boston, MA 02118, USA. E-mail: rhorsbu{at}bu.edu