- Band 3 Chur: a variant associated with band 3-deficient hereditary spherocytosis and substitution in a highly conserved position of transmembrane segment 11. Maillet, P., Vallier, A., Reinhart, W.H., Wyss, E.J., Ott, P., Texier, P., Baklouti, F., Tanner, M.J., Delaunay, J., Alloisio, N. Br. J. Haematol. (1995)