Incorrect Concentration of α2‐Antiplasmin Shown in Figures in the Article by Kanno et al (Arthritis Rheum, February 2013). Issue 6 (June 2014) - Kanno, Yosuke; Kawashita, Eri; Kokado, Akiko; Okada, Kiyotaka; Ueshima, Shigeru; Matsuo, Osamu; Matsuno, Hiroyuki