Should China be closed forever? A Preventive Medicine golden jubilee commentary.

"Declaration of Competing Interest Dr. Liu reports consulting payments and honoraria or promises of the same for scientific presentations or reviews at numerous venues, including but not limited to Barilla, Johns Hopkins University, Fred Hutchinson Cancer Center, Harvard University, University of Buffalo, Guangdong General Hospital, Fuwai Hospital, and Chinese Academy of Medical Sciences, and the National Institutes of Health. He is also a member of the Data Safety and Monitoring Board for several trials, including the SELECT Trial -Semaglutide Effects on Cardiovascular Outcomes in People With Overweight or Obesity sponsored by Novo Nordisk and a trial of pulmonary hypertension in diabetes patients sponsored by at Massachusetts General Hospital. He receives royalties from UpToDate. Dr. Liu receives an honorarium from the American Society for Nutrition for his duties as Associate Editor."