Challenges in detecting and predicting adverse drug events via distributed analysis of electronic health record data from German university hospitals - Anna Maria Wermund; Torsten Thalheim; André Medek; Florian Schmidt; Thomas Peschel; Alexander Strübing; Daniel Neumann; André Scherag; Markus Loeffler; Miriam Kesselmeier; Ulrich Jaehde (PLOS Digital Health)