- Correspondence to Dr Kristen Dams-O'Connor, Department of Rehabilitation Medicine, Mount Sinai School of Medicine, One Gustave Levy Place, Box 1240, New York, NY 10029-6574, USA; kristen.dams-o'
- Received August 23, 2012
- Revised October 19, 2012
- Accepted October 24, 2012
- First published November 21, 2012.
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