Pop star Tim Bendzko @bendzko thanking the study participants with his hit song, Nur noch kurz die Welt retten (Just quickly saving the world): "You're the heroes today!" #Restart19pic.twitter.com/sXbIvLzvti
Participants are also given a digital contact tracer and a bottle of disinfectant with fluorescent paint to mark the surfaces they touch. After a fever check, the "usual" security measures also took place at the entrance. pic.twitter.com/1NCyQqqzMV