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2. Urticarial vasculitis in hypocomplementemic urticarial vasulitis syndrome;Davis;Immunol Allergy Clin North Am,2004
3. Emphysema in nonsmokers: α1-antitrypsin deficiency and other causes;Lee;Cleve Clin J Med,2002
4. Hypocomplementemic urticarial vasculitis: association with chronic obstructive pulmonary disease;Schwartz;Mayo Clin Proc,1982
5. Mixed warm and cold antibody type autoimmune hemolytic anemia associated with systemic lupus erythematosus [in Japanese];Watanabe;Rinsho Ketsueki,1996