Working Group Head and Research Associate UniID Please fill out this field using the example format provided in the placeholder. The phone number will be handled in accordance with GDPR. Count Persons (2) Contact Phone E-Mail Details PD Dr. Petra Friederichs +49 (0)228 735187 pfried@uni-bonn.de PD Dr. Silke Trömel +49 (0)228 735779 silke.troemel@uni-bonn.de