?:authorAffiliation
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[\'Vanke School of Public Health, Tsinghua University, Beijing. yw424@duke.edu.\', \'Department of Surgery, Brigham and Women\'s Hospital, Boston, MA, USA; Department of Health Policy and Management, Harvard T.H. Chan School of Public Health, Boston, MA. ttsai@hsph.harvard.edu.\', \'Department of Epidemiology, Columbia University Mailman School of Public Health, New York, NY. dd3018@cumc.columbia.edu.\', \'Vanke School of Public Health, Tsinghua University, Beijing. johnji@tsinghua.edu.cn.\']
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