PT - JOURNAL ARTICLE AU - Braun, Matthias TI - Ethics of digital twins: four challenges AID - 10.1136/medethics-2021-107675 DP - 2022 Sep 01 TA - Journal of Medical Ethics PG - 579--580 VI - 48 IP - 9 4099 - http://jme.bmj.com/content/48/9/579.short 4100 - http://jme.bmj.com/content/48/9/579.full SO - J Med Ethics2022 Sep 01; 48