R. Soi-ampornkul, S. . Junnu, W. . Chotinaiwattarakul, U. . Wongmanee, B. . Suktitipat, and N. Neungton, “Comparative Analysis of Serum Ceruloplasmin Levels in Wilson Disease by Conventional Enzymatic Assay and Immunologic Method”, Siriraj Med J, vol. 58, no. 1, pp. 600–605, Jan. 2006.