Browse
All of eScholarship@UMassChanCommunitiesPublication DateAuthorsUMass Chan AffiliationsTitlesDocument TypesKeywordsThis CollectionPublication DateAuthorsUMass Chan AffiliationsTitlesDocument TypesKeywordsProfilesView
My Account
Help
About and PoliciesSubmission GuidelinesData Deposit PolicyDeposit LicenseSearching GuideUsage Statistics GuideAccessibilityTerms of UseWebsite Upgrade 2024 FAQWebsite Migration 2022 FAQ
Statistics
We are upgrading the repository! The content freeze has been extended to December 11, 2024, when we expect the new repository to become available. New submissions or changes to existing items will not be allowed until after the new website goes live. All content already published will remain publicly available for searching and downloading. Updates will be posted in the Website Upgrade 2024 FAQ in the sidebar Help menu. Reach out to escholarship@umassmed.edu with any questions.
Except where otherwise noted, this item's license is described as Copyright © 2020 Li, Su, Chen, Li, Yang, Zhang, Liu, Shao, Zhang, Ding, Lu, Yu, Fan, Song and Lv. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.