Prugger Christof, Spelsberg Angela, Keil Ulrich, Erviti Juan, Doshi Peter
Institute of Public Health, Charité-Universitätsmedizin Berlin, Berlin, Germany
Comprehensive Cancer Centre Aachen, Aachen, Germany.
BMJ. 2021 Dec 23;375:e067570. doi: 10.1136/bmj-2021-067570.