Liu, Zhenzhen
Sharen, Gaowa
Wang, Pan
Chen, Liyuan
Tan, Li
Article History
Received: 2 December 2021
Accepted: 28 March 2022
First Online: 5 April 2022
Declarations
:
: This study was approved by the Ethics Committee of Peking Union Medical College Hospital of Chinese Academy of Medical Sciences, China which granted permission for data collection from hospital medical database. All methods in this study were carried out in accordance with relevant guidelines and regulations. Informed consent was obtained from all patients and/or their legal guardians.
: Not applicable.
: None of the authors have a competing interests.