%0 Journal Article %T Complement-4 Deficiency in a Child with Systemic Lupus Erythematosus Presenting with Standard Treatment-Resistant Severe Skin Lesion %A Betul Sozeri %A Sevgi Mir %A Afig Berdeli %J ISRN Rheumatology %D 2011 %I Hindawi Publishing Corporation %R 10.5402/2011/917673 %U http://dx.doi.org/10.5402/2011/917673