Antidiabetic screening and scoring of 11 plants traditionally used in South Africa - van de Venter, M; Roux, S; Bungu, L C; Louw, J; Crouch, N R; Grace, O M; Maharaj, V; Pillay, P; Sewnarian, P; Bhagwandin, N; Folb, P (J Ethnopharmacol, 2008)