SLC30A8 and type 1 diabetes mellitus: Characteristic data of the patients as well as the zinc transporter 8 (ZnT8A) end-point titres and the 50% binding levels used in the displacement experiments of the newly diagnosed type 1 diabetes (T1D) patients with variant-specific ZnT8RA serum (n = 12) (a) and with variant-specific ZnT8WA (n = 12) (b)