1 Department of Molecular Genetics, Department of Radiology and Nuclear Medicine, Oncode Institute, Erasmus Medical Center Rotterdam, Rotterdam, Netherlands. j.nonnekens@erasmusmc.nl.
2 Translational Radiopharmaceutical Sciences, Department of Nuclear Medicine, Department of Oncology, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland. margret.schottelius@chuv.ch.