1. Department of Internal Medicine, Sector of Endocrinology (K.K., R.A.F., R.C.S.v.A., W.W.d.H.), 3015 CE Rotterdam, The Netherlands
2. Department of Clinical Chemistry (Y.B.d.R.), 3015 CE Rotterdam, The Netherlands
3. Department of Pathology (F.H.v.N.), 3015 CE Rotterdam, The Netherlands
4. Department of Nuclear Medicine (D.J.K.), ENETS Centre of Excellence, Erasmus Medical Center, 3015 CE Rotterdam, The Netherlands