1. From the Shenzhen Institute of Advanced Technology (Zhirong Yang, C.W., Z.Z., F.S., J.T.), Chinese Academy of Sciences, Guangdong, China; Primary Care Unit (Zhirong Yang), School of Clinical Medicine, University of Cambridge, United Kingdom; Department of Population Medicine (X.L., S.T.), Harvard Medical School & Harvard Pilgrim Health Care Institute, Boston, MA; Center for Digestive Disease (J.Y.), The Seventh Affiliated Hospital, Sun Yat-sen University; Central Laboratory (X.G.), Shenzhen Key...