1. Department of Internal Medicine, Genesys Regional Medical Center, 1 Genesys Pkwy, Grand Blanc, MI 48439, USA
2. Department of Gastroenterology, Genesys Regional Medical Center, 1 Genesys Pkwy, Grand Blanc, MI 48439, USA
3. Department of Pathology, Genesys Regional Medical Center, 1 Genesys Pkwy, Grand Blanc, MI 48439, USA