1. 1) LeRoy EC, Black C, Fleischmajer R, et al. : Scleroderma (systemic sclerosis) : classification, subsets, and pathogenesis. J. Rheumatol 15 : 202-205, 1998.
2. 2) Tan EM. Antinuclear antibodies : diagnostic markers for autoimmune diseases and probes for cell biology. Adv. Immunol 44 : 93-151, 1989.
3. 3) Fanning GC, Welsh KI, Bunn C, et al. : HLA associations in three mutually exclusive autoantibody subgroups in UK systemic sclerosis patients. Br J Rheumatol 37 : 201-207, 1998.
4. 4) Hamaguchi Y, Hasegawa M, Fujimoto M, et al. : The clinical relevance of serum antinuclear antibodies in Japanese patients with systemic sclerosis. Br J Dermatol 158 : 487-495, 2008.
5. 5) Ho KT, Reveille JD. The clinical relevance of autoantibodies in scleroderma. Arthritis Res Ther 5 : 80-93, 2003.