[1] Northwestern Univ, Feinberg Sch Med, Lurie Comprehens Canc Ctr, Ctr Genet Med,Dept Neurol, Chicago, IL 60611 USA
[2] Chinese Acad Sci, Inst Biophys, Beijing 100101, Peoples R China
[3] Peking Univ, Coll Life Sci, Natl Lab Prot Engn & Plant Genet Engn, Ctr Bioinformat, Beijing 100871, Peoples R China
[4] Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China