1 Division of Neurology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.
2 Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania; Department of Biomedical and Health Informatics (DBHi), Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.
3 Division of Neurology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania; Department of Biomedical and Health Informatics (DBHi), Children's Hospital of Philadelphia, Philadelphia, Pennsylvania; The Epilepsy NeuroGenetics Initiative (ENGIN), Children's Hospital of Philadelphia, Philadelphia; Department of Neurology, University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania. Electronic address: helbigi@email.chop.edu.