RT Journal Article SR Electronic T1 XIST-ing Down Syndrome JF Science Translational Medicine FD American Association for the Advancement of Science SP 199ec138 OP 199ec138 DO 10.1126/scitranslmed.3007253 VO 5 IS 199 A1 Schaefer, Anne YR 2013 UL http://stm.sciencemag.org/content/5/199/199ec138.abstract