Amniotic fluid insulin levels and fetal abdominal circumference at time of amniocentesis in pregnancies with diabetes. - Schaefer-Graf,U.M.; Kjos,S.L.; Bühling,K.J.; Henrich,W.; Brauer,M.; Heinze,T.; Dudenhausen,J.W.; Vetter,K. (Diabet Med, 2003)