Affiliations:
Department of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
Correspondence:
[*]
Correspondence to: Steven S. Scherer, The Perelman School of Medicine at the University of Pennsylvania, 3 W. Gates, 3400 Spruce St., Philadelphia, PA 19104, USA. Tel.: +1 215 573 3198; Fax: +1 215 573 4454; E-mail: sscherer@pennmedicine.upenn.edu.