Degner JF, Pai AA, Pique-Regi R, Veyrieras JB, Gaffney DJ, Pickrell JK, De Leon S, Michelini K, Lewellen N, Crawford GE, Stephens M, Gilad Y, Pritchard JK. DNase?I sensitivity QTLs are a major determinant of human expression variation. Nature. 2012 Feb 05; 482(7385):390-4.