- Correspondence to Dr Lisa F Barcellos, Division of Epidemiology, Genetic Epidemiology and Genomics Lab, School of Public Health, 308D Stanley Hall, University of California, Berkeley, CA 94720-3220, USA;
- Received August 2, 2013
- Revised February 4, 2014
- Accepted February 9, 2014
- First published February 27, 2014.
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