1. Department of Medicine, All India Institute of Medical Sciences, New Delhi, India.
2. Center for Diabetes, Obesity, and Cholesterol Disorders, Vasant Kunj, New Delhi, India.
3. Fortis-Centre of Excellence for Diabetes, Metabolic Diseases and Endocrinology, Vasant Kunj, New Delhi, India.
4. Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India.
5. Department of Pulmonary Medicine and Sleep Disorders, All India Institute of Medical Sciences, New Delhi, India.
6. Department of Biostatistics, All India Institute of Medical Sciences, New Delhi, India.