1. Department of Bioinformatics and Genomics, University of North Carolina (UNC) at Charlotte, Charlotte, NC 28223, USA.
2. UNC Charlotte Bioinformatics Service Division, North Carolina Research Campus, Kannapolis, NC 28081, USA.
3. Department of Systems Biology, Department of Biochemistry and Molecular Biophysics, Center for Motor Neuron Biology and Disease, Columbia University, New York, NY 10032, USA.
4. Department of Pediatrics, Department of Neurobiology, Program in Genetics and Genomics, School of Medicine, Duke University, Durham, NC 27710, USA.