1. Department of Surgery, University of North Dakota School of Medicine and Health Sciences, Grand Forks, North Dakota, USA
2. Department of Population Health, University of North Dakota School of Medicine and Health Sciences, Grand Forks, North Dakota, USA
3. Department of Family and Community Medicine, University of North Dakota School of Medicine and Health Sciences, Grand Forks, North Dakota, USA
4. Department of Internal Medicine, University of North Dakota School of Medicine and Health Sciences, Grand Forks, North Dakota, USA