Wu, Xiaomei
Zhu, Bo
Zhou, Jin
Bi, Yifei
Xu, Shuang
Zhou, Baosen
Article History
Received: 31 December 2020
Accepted: 30 March 2021
First Online: 15 April 2021
Declarations
:
: GBD 2019 was publicly available for free use, the protocol was approved by the Medical Research Ethics Committee of the First Hospital of China Medical University.
: Not applicable.
: The authors declare that they have no competing interests.