Vokinger, K. N., V. Nittas, C. M. Witt, S. I. Fabrikant, and V. von Wyl. “Digital Health and the COVID-19 Epidemic: An Assessment Framework for Apps from an Epidemiological and Legal Perspective”. Swiss Medical Weekly, vol. 150, no. 1920, May 2020, p. w20282, doi:10.4414/smw.2020.20282.