Acknowledgement
We thank Ms. Mandy Li for data maintenance and logistic support. Dr Lee Kok Long and staff of the Association of Hong Kong Nursing Staff are thanked for their assistance in administering the survey. Li Ka Shing Institute of Health Sciences, and Stanley Ho Centre for Emerging Infectious Diseases at The Chinese University of Hong Kong are acknowledged for providing technical support in developing the analyses.
Disclosure statement
No potential conflict of interest was reported by the author(s).