Received: 7 April 2021
Accepted: 26 October 2021
First Online: 19 November 2021
: The CABLE study was conducted in accordance with the Declaration of Helsinki, and the protocol for this study was approved by the Institutional Ethics Committee of Qingdao Municipal Hospital. Written informed consent was obtained from all study participants directly or from their caregivers.
: Not applicable.
: The authors declare that they have no competing interests.