Activating glucokinase (GCK) mutations as a cause of medically responsive congenital hyperinsulinism: prevalence in children and characterisation of a novel GCK mutation. by Christesen, H, Tribble, N, Molven, A, Siddiqui, J, Sandal, T, Brusgaard, K, Ellard, S, Njølstad, P, Alm, J, Brock Jacobsen, B, Hussain, K, Gloyn, A