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A. G. H. Smals, Division of Endocrinology, University of Nijmegen; The Netherlands
K. T. Njo, Department of Medicine, Bethesda Hospital, Hoogeveen; The Netherlands
J. M. Knoben, Department of Medicine, St Anna Hospital, Geldrop; The Netherlands
C. M. Ruland, Department of Medicine, St Canisius Hospital, Nijmegen; The Netherlands
P. W. C. Kloppenborg, Division of Endocrinology, University of Nijmegen, The Netherlands
