1. Department of Pathology (M.C., K.v.A., A.-M.K., M.B., J.W.O., L.H.J.L.), Erasmus MC, University Medical Center Rotterdam, Daniel den Hoed, Josephine Nefkens Institute, 3000 DR Rotterdam, The Netherlands;
2. Departments of Pediatric Endocrinology (S.L.S.D.), 3000 CB Sophia, The Netherlands;
3. Pediatric Urology (K.P.W.), Erasmus MC, University Medical Center Rotterdam, 3000 CB Sophia, The Netherlands;
4. Center for Clinical Decision Sciences (E.W.S.), Department of Public Health, Erasmus MC, University Medical Center, 3000 DR Rotterdam, The Netherlands