Islet transplantation in seven patients with type 1 diabetes mellitus using a glucocorticoid-free immunosuppressive regimen - Shapiro, A M; Lakey, J R; Ryan, E A; Korbutt, G S; Toth, E; Warnock, G L; Kneteman, N M; Rajotte, R V (N Engl J Med, 2000)