A 3-year-old child came to OPD with bruising and generalized petechiae. No hepatosplenomegaly or lymphadenopathyis noted. He have ahistory of viral illness 2 weeks back. On investigation a normal hemoglobin, hematocrit, and white blood cell (WBC) count and differential. The platelet count is 19,000/iL. All of the following are associated with above illness except?