[1] Wellcome Trust Sanger Inst, Cellular Genet, Hinxton, England
[2] Seoul Natl Univ, Ctr Genome Engn, Inst Basic Sci, Seoul, South Korea
[3] Seoul Natl Univ, Chem, Seoul, South Korea
[4] Harvard Univ, Chem & Chem Biol, Cambridge, MA 02138 USA
[5] Allen Inst Brain Sci, Struct Sci, Seattle, WA USA
[6] NYU, Langone Med Ctr, Inst Syst Genet, New York, NY USA
[7] MRC Lab Mol Biol, Cambridge, England
[8] Univ Penn, Syst Pharmacol & Translat Therapeut, Perelman Sch Med, Philadelphia, PA 19104 USA