Authors: Patrick E McGovern; Juzhong Zhang; Jigen Tang; Zhiqing Zhang; Gretchen R Hall; Robert A Moreau; Alberto Nuñez; Eric D Butrym; Michael P Richards; Chen-Shan Wang; Guangsheng Cheng; Zhijun Zhao; Changsui Wang Journal: Proc Natl Acad Sci U S A Date: 2004-12-08 Impact factor: 11.205