She, Wong Hoi
Cheung, Tan To
Ma, Ka Wing
Tsang, Simon H. Y.
Dai, Wing Chiu
Chan, Albert C. Y.
Lo, Chung Mau
Article History
First Online: 14 June 2020
Compliance with ethical standards
:
: None of the authors has any conflict of interest.
: Institution research ethics committee approval was not needed for retrospective study of anonymous clinical data.
: Informed consent to the study from patients was not needed as it is a review and analysis of anonymous clinical data and no individuals can be identified by the reported data.