Center for Quantitative Biology, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China.|Center for Quantitative Biology, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China.|Department of Chemical Pathology and Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China.|Center for Quantitative Biology, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China.