Long-term Vascular Outcomes of Idiopathic Thrombotic Microangiopathy Treated with Plasma Exchange Dr. William Clark University of Western (July 30, 2014 to July 29, 2016)The Role of Complement Factor H Abnormality in Pathogenesis of Thrombotic Thrombocytopenic Purpura Dr. Long Zheng University of Alabama at Birmingham (September 30, 2014 to September 29, 2016)