1. Atlanta VA Medical Center, Division of Endocrinology, Diabetes, & Lipids; Emory University School of Medicine; Decatur Georgia USA
2. Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology; Atlanta Georgia USA
3. School of Chemical & Biomolecular Engineering; Georgia Institute of Technology; Atlanta Georgia USA
4. Department of Medical Science; National Tsing Hua University; Taiwan USA
5. Department of Biomedical Engineering; Georgia Institute of Technology; Atlanta Georgia USA