- Correspondence to Dr Charles B Hall, Department of Epidemiology and Population Health, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Block 312, Bronx, NY 10461, USA;
- Received June 24, 2015
- Revised October 6, 2015
- Accepted October 21, 2015
- First published November 16, 2015.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.