1 Johannes Berkhof, PhD, Amsterdam UMC, Vrije Universiteit Amsterdam, Epidemiology and Data Science, Cancer Center Amsterdam, Amsterdam, the Netherlands; and Stefanie Dick, MD, Wieke Kremer, MD, PhD, Maaike Bleeker, MD, PhD, and Chris Meijer, MD, PhD, Amsterdam UMC, Vrije Universiteit Amsterdam, Pathology, Cancer Center Amsterdam, Amsterdam, the Netherlands.