Sequence diversity and functional charactterization of the 5´-regulatory region of human cyp2c19 - Arefayene, Million; Skaar, Todd C.; Zhao, Xiaojiong; Rae, James M.; Tanus-Santos, José E.; Brinkmann, Ulrich; Brehm, Ilka; Salat, Ulrike; Nguyen, Anne; Desta, Zeruesenay; Flockhart, David A. (Pharmacogenetics, 2003)