Page 1/25 Prognostic value of deep learning based mitotic count in hormonal receptor- and HER2-positive breast cancer Maschenka Balkenhol Radboud university medical center Caner Mercan Radboud university medical center https://orcid.org/0000-0003-1913-4669 Leslie Tessier Radboud university medical center David Tellez Radboud university medical center Roberto Salgado GZA https://orcid.org/0000-0002-1110-3801 Heikki Joensuu Helsinki University Hospital https://orcid.org/0000-0003-0281-2507 Sherene Loi Peter MacCallum Cancer Centre https://orcid.org/0000-0001-6137-9171 Stefan Michiels Gustave Roussy, CESP, U1018, Université Paris-Sud, Faculté de Médcine, Université Paris-Saclay https://orcid.org/0000-0002-6963-2968 Denis Larsimont Institut Jules Bordet Anne-Sophie Wegscheider Pathologie Hamburg-West GmbH, Institut für Histologie, Zytologie und molekulare Diagnostik, Hamburg, Germany Axel Niendorf Institute for Histology, Cytology and Molecular Diagnostics Mark Sherman Mayo Clinic https://orcid.org/0000-0002-9222-8808 Peter Bult Radboud University Medical Center Francesco Ciompi Radboud University Medical Center Jeroen van der Laak (  jeroen.vanderlaak@radboudumc.nl )