Affiliations: Kennedy Krieger Institute, Department of Physical
Medicine and Rehabilitation, Johns Hopkins University School of Medicine,
Baltimore, MD, USA
Note: [] Address for correspondence: Stacy Suskauer, M.D., Kennedy
Krieger Institute, Pediatric Rehabilitation, 707 North Broadway, Baltimore, MD
21205, USA. Tel.: +1 443 923 9440; Fax: +1 443 923 9445; E-mail:
suskauer@kennedykrieger.org