1. Department of Internal Medicine MetroHealth Medical CenterCase Western Reserve University Cleveland OH USA
2. Division of Gastroenterology and Hepatology The Oesophageal and Swallowing CenterCase Western Reserve UniversityMetroHealth Medical Center Cleveland OH USA
3. Department of Biostatistics Harvard T.H. Chan School of Public Health Boston MA USA
4. Data Management and Statistical Analysis Unit Mood Disorders Program University Hospitals Case Medical CenterCase Western Reserve University Cleveland OH USA