1 a Division of Endocrinology, Metabolism and Diabetes, Department of Medicine University of Colorado - Denver | Anschutz Medical Campus , Aurora , CO, USA.
2 b Department of Mathematical Sciences United States Military Academy , West Point , NY , USA.
3 c COS & Associates Ltd ., Central , Hong Kong.
4 d Department of Epidemiology and Biostatistics, School of Public Health Indiana University-Bloomington , Bloomington , IN , USA.