Funding for this research was provided by:
the start-up grant from the College of Health and Human Development and the Department of Nutritional Sciences, Penn State University
Shanghai Municipal Education Commission-Gaofeng Clinical Medicine Grant Support (20172004)
National Institute of Allergy and Infectious Diseases of the National Institutes of Health (R01AI136664)
Received: 12 February 2021
Accepted: 20 May 2021
First Online: 16 June 2021
: The study was approved by the Ethics Committee of the Kailuan General Hospital. The Kailuan Study was registered at the International Clinical Trials Registry Platform (ExternalRef removed TrialID=ChiCTR-TNRC-11001489) with study ID number: ChiCTR-TNRC-11001489. All participants had provided written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.