Acknowledgements
Author contributions: Dr Chan and Dr Lee had full access to all
of the data in the
study and take responsibility for the integrity of the data and the
accuracy of the data analysis.
Study concept and design: Chan, Lee, Sultana.
Acquisition, analysis, and interpretation of data: Chan, Lee, Sultana.
Drafting of the manuscript: Chan, Lee, Sultana.
Critical revision of the manuscript for important intellectual content:
All authors.
Statistical analysis: Sultana, Chan, Lee.
Administrative, technical, or material support: Choo, Yeo.
Study supervision: Lee.