Affiliation: | 1 Broad Institute, Cambridge, MA 02142, USA 2 Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA 02138, USA 3 Harvard Stem Cell Institute, Cambridge, MA 02138, USA 4 Max Planck Institute for Informatics, 66123 Saarbrücken, Germany 5 The Howard Hughes Medical Institute, USA 6 Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138, USA 7 Project A.L.S./Jenifer Estess Laboratory for Stem Cell Research, Departments of Pathology, Neurology, and Neuroscience, Center for Motor Neuron Biology and Disease (MNC), and Columbia Stem Cell Initiative (CSCI), Columbia University, New York, NY 10032, USA |