- Partial recovery of insulin secretion and action after combined insulin-sulfonylurea treatment in type 2 (non-insulin-dependent) diabetic patients with secondary failure to oral agents. Del Prato, S., Vigili de Kreutzenberg, S., Riccio, A., Maifreni, L., Duner, E., Lisato, G., Iavicoli, M., Tiengo, A. Diabetologia (1990)