1 Institute of Pathology, RWTH Aachen University , Aachen, Germany ; Institute for Biomedical Engineering, Biointerface Group, RWTH Aachen University, Aachen, Germany.
2 Institute for Biomedical Engineering, Biointerface Group, RWTH Aachen University, Aachen, Germany ; Interdisciplinary Centre for Clinical Research, IZKF "BIOMAT", RWTH Aachen University , Aachen, Germany.
3 Institute of Pathology, RWTH Aachen University , Aachen, Germany ; Interdisciplinary Centre for Clinical Research, IZKF "BIOMAT", RWTH Aachen University , Aachen, Germany.
4 Institute of Pathology, RWTH Aachen University , Aachen, Germany.