1. Division of Bariatric, Foregut, and Advanced Gastrointestinal Surgery, Department of Surgery, Stony Brook University, Stony Brook, New York
2. Division of Epidemiology and Biostatistics, Department of Family, Population and Preventive Medicine, Stony Brook University, Stony Brook, New York
3. Department of Applied Mathematics and Statistics, Stony Brook University, Stony Brook, New York