Zhang, M., Chow, A., Ho, R. C. M., Smith, H. E., & (LKCMedicine), L. K. C. S. o. M. (2021). An overview of commercially available apps in the initial months of the COVID-19 pandemic.

Zhang, Melvyn, Aloysius Chow, Roger C. M. Ho, Helen Elizabeth Smith, and Lee Kong Chian School of Medicine (LKCMedicine). An Overview of Commercially Available Apps in the Initial Months of the COVID-19 Pandemic. 2021.

Zhang, Melvyn, et al. An Overview of Commercially Available Apps in the Initial Months of the COVID-19 Pandemic. 2021.