Frequent bleeding symptoms associated with autoimmune acquired factor XIII/13 deficiency due to anti‐factor XIII A and B subunit antibodies. Issue 11 (25th August 2022) - Ozaki, Shuji; Mizuguchi, Makiko; Okamoto, Yasunobu; Yagi, Hikaru; Kagawa, Kumiko; Shibata, Hironobu; Yoda, Keiji; Souri, Masayoshi; Ichinose, Akitada