Author information:
(1)Department of Molecular and Human Genetics, Baylor College of Medicine, 
Houston, TX 77030, USA; Jan and Dan Duncan Neurological Research Institute at 
Texas Children's Hospital, Houston, TX 77030, USA.
(2)Department of Pathology and Immunology, Baylor College of Medicine, Houston, 
TX 77030, USA.
(3)Department of Pathology and Immunology, Baylor College of Medicine, Houston, 
TX 77030, USA; Department of Neuroscience, Baylor College of Medicine, Houston, 
TX 77030, USA; Jan and Dan Duncan Neurological Research Institute at Texas 
Children's Hospital, Houston, TX 77030, USA.
(4)Program in Developmental Biology, Baylor College of Medicine, Houston, TX 
77030, USA; Jan and Dan Duncan Neurological Research Institute at Texas 
Children's Hospital, Houston, TX 77030, USA.
(5)Department of Molecular and Human Genetics, Baylor College of Medicine, 
Houston, TX 77030, USA; Howard Hughes Medical Institute, Baylor College of 
Medicine, Houston, TX 77030, USA; Jan and Dan Duncan Neurological Research 
Institute at Texas Children's Hospital, Houston, TX 77030, USA.
(6)Department of Pathology and Immunology, Baylor College of Medicine, Houston, 
TX 77030, USA; Program in Developmental Biology, Baylor College of Medicine, 
Houston, TX 77030, USA; Department of Molecular and Cellular Biology, Baylor 
College of Medicine, Houston, TX 77030, USA; Dan L. Duncan Cancer Center, Baylor 
College of Medicine, Houston, TX 77030, USA; Department of Molecular Physiology 
and Biophysics, Baylor College of Medicine, Houston, TX 77030, USA.
(7)Institute for Translational Neuroscience, Department of Laboratory Medicine 
and Pathology, University of Minnesota, Minneapolis, MN 55455, USA.
(8)Department of Pathology and Immunology, Baylor College of Medicine, Houston, 
TX 77030, USA; Department of Neuroscience, Baylor College of Medicine, Houston, 
TX 77030, USA; Program in Developmental Biology, Baylor College of Medicine, 
Houston, TX 77030, USA; Jan and Dan Duncan Neurological Research Institute at 
Texas Children's Hospital, Houston, TX 77030, USA.
(9)Department of Molecular and Human Genetics, Baylor College of Medicine, 
Houston, TX 77030, USA; Department of Pathology and Immunology, Baylor College 
of Medicine, Houston, TX 77030, USA; Program in Developmental Biology, Baylor 
College of Medicine, Houston, TX 77030, USA; Howard Hughes Medical Institute, 
Baylor College of Medicine, Houston, TX 77030, USA; Department of Pediatrics, 
Baylor College of Medicine, Houston, TX 77030, USA; Jan and Dan Duncan 
Neurological Research Institute at Texas Children's Hospital, Houston, TX 77030, 
USA. Electronic address: hzoghbi@bcm.edu.