1 Vanderbilt Genetics Institute, Vanderbilt University Medical Center, Nashville, TN, USA.
2 Departments of Epidemiology and Biostatistics, Case Western Reserve University School of Medicine, Cleveland, OH, USA.
3 Departments of Genetics and Genome Sciences, Case Western Reserve University School of Medicine, Cleveland, OH, USA.
4 Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, 2205 Garland Avenue, Nashville, TN, 37232, USA.
5 Department of Pathology, School of Medicine, Universidad del Valle, Cali, 760043, Colombia.
6 Department of Biology, University of Nariño, Pasto, 520002, Colombia.
7 Stanley S. Scott Cancer Center, Louisiana State University Health Sciences Center, New Orleans, LA, USA.
8 Department of Surgery, Vanderbilt University Medical Center, Nashville, TN, USA.
9 Department of Veterans Affairs, Veterans Affairs Tennessee Valley Healthcare System and Office of Medical Research, Nashville, TN, USA.
10 Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, 2205 Garland Avenue, Nashville, TN, 37232, USA. barbara.schneider@vanderbilt.edu.