Milder phenotypes of glucose transporter type 1 deficiency syndrome. by Anand, G, Padeniya, A, Hanrahan, D, Scheffer, H, Zaiwalla, Z, Cox, D, Mann, N, Hewertson, J, Price, S, Nemeth, A, Arsov, T, Scheffer, I, Jayawant, S, Pike, M, McShane, T