Authors’ contributions
RS, Cancer
CANCER
DA coordinates the study and wrote the manuscript, MGEHL and IHMBR (principal investigator) conceived and supervise the study. JNMI, MWN, JIE and RS are local principal investigators of Erasmus University Medical Center, University Medical Center Groningen, Amsterdam University Medical Center and Regina Elena National Cancer Institute, respectively. All authors are involved in study activities and were involved in the design of the study. All authors read, reviewed and approved the final manuscript.