Author contributions
(1) Concept or design: Wilson YK Chan, Joanna YL Tung
(2) Acquisition of data: Wilson YK Chan, Eric CY Law, TK Ling, Felix CK
Wong, Joanna YL Tung
(3) Analysis or interpretation of data: Wilson YK Chan, Eric CY Law, TK
Ling, Felix CK Wong, Daniel KL Cheuk, Joanna YL Tung
(4) Drafting of the article: Wilson YK Chan
(5) Critical revision for important intellectual content: Wilson YK
Chan, Eric CY Law, TK Ling, Felix CK Wong, Daniel KL Cheuk, Joanna YL
Tung
All authors had full access to the data, contributed to the study,
approved the final version for publication, and take responsibility for
its accuracy and integrity.