[1] Penn State Milton S Hershey Med Ctr, Dept Pediat, Hershey, PA 17033 USA
[2] Univ Maryland, Med Ctr, Dept Med, Baltimore, MD 21201 USA
[3] Penn State Milton S Hershey Med Ctr, Dept Family & Community Med, Hershey, PA 17033 USA
[4] Penn State Milton S Hershey Med Ctr, Dept Orthoped & Rehabil, Hershey, PA 17033 USA
[5] Penn State Milton S Hershey Med Ctr, Dept Neurol, Hershey, PA 17033 USA