Article History
Received: 14 December 2019
Accepted: 13 July 2020
First Online: 22 July 2020
Ethics approval and consent to participate
: This non-randomized controlled study was approved by the Research Ethics Committee of Peking Union Medical College Hospital and was registered at clinicaltrials.gov (NCT02470221). Written informed consent was obtained from all patients.
: Not applicable.
: The authors declare that they have no competing interests.