Özgün BAŞARAN KAYA, Mahmut ÇİVİLİBAL, Murat ELEVLİ, Macit KOLDAŞ, and Nilgün SELÇUK DURU1, “Increased Serum Immunoglobulin A Antiphospholipid Antibody Levels in Childhood Henoch-Schönlein Purpura”, Archives of Rheumatology, vol. 27, no. 4, pp. 227–232, Dec. 2012.