- Correspondence to Professor Cornelia M van Duijn, Genetic Epidemiology Unit, Department of Epidemiology, Erasmus Medical Center, Postbus 2040, Rotterdam 3000 CA, The Netherlands;
- Received August 4, 2015
- Revised November 19, 2015
- Accepted November 23, 2015
- First published April 1, 2016.
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