Long-term metabolic and immunological follow-up of nonimmunosuppressed patients with type 1 diabetes treated with microencapsulated islet allografts: four cases - Basta, G; Montanucci, P; Luca, G; Boselli, C; Noya, G; Barbaro, B; Qi, M; Kinzer, K P; Oberholzer, J; Calafiore, R (Diabetes Care, 2011)