JASPAR 2010: the greatly expanded open-access database of transcription factor binding profiles - Portales-Casamar, E; Thongjuea, S; Kwon, AT; Arenillas, D; Zhao, X; Valen, E; Yusuf, D; Lenhard, B; Wasserman, WW; Sandelin, A (NUCLEIC ACIDS RESEARCH, 2010)