[1] Harvard Univ, Dept Chem & Chem Biol, Cambridge, MA 02138 USA
[2] Peking Univ, Biodynam Opt Imaging Ctr, Beijing 100871, Peoples R China
[3] Fudan Univ, Sch Math Sci, Shanghai 200433, Peoples R China
[4] Fudan Univ, Ctr Computat Syst Biol, Shanghai 200433, Peoples R China