Authors:George Pan, Emory UniversityRui Zheng, Emory UniversityPingar Yang, University of Alabama at BirminghamYao Li, University of Alabama at BirminghamJohn P. Clancy, University of Alabama at BirminghamJianzhong Liu, University of Alabama at BirminghamXu Feng, University of Alabama at BirminghamDavid A Garber, Emory UniversityPaul Spearman, Emory UniversityJay M McDonald, University of Alabama at Birmingham