Familial Aggregation between the 14 and 21 Century and Type 2 Diabetes Risk in an Isolated Dutch Population

1 Diabetes Centre, Isala, 8025 BT, Zwolle, The Netherlands, 2 Department of General practice, University Medical Center Groningen and University of Groningen, 9700 RB, Groningen, The Netherlands, 3 General practice Urk, 8322 BA, The Netherlands, 4 Department of internal medicine, Gelre hospital, 7334 DZ, Apeldoorn, The Netherlands, 5 Langerhans Medical Research Institute, Zwolle, The Netherlands, 6 Department of Internal Medicine, University Medical Center Groningen and University of Groningen, 9700 RB, Groningen, The Netherlands, 7 Department of genetics, University Medical Center Groningen and University of Groningen, 9700 RB, Groningen, The Netherlands