Department of Preventive Medicine, Division of Gastroenterology & Hepatology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA; Department of Medicine, Division of Gastroenterology & Hepatology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA. Electronic address: lvw@northwestern.edu. Department of Preventive Medicine, Division of Gastroenterology & Hepatology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA. Electronic address: h-ning@northwestern.edu. University of Alabama Birmingham, Birmingham, AL, USA. Electronic address: clewis@mail.dopm.uab.edu. University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA. Electronic address: christina-shay@ouhsc.edu. Department of Preventive Medicine, Division of Gastroenterology & Hepatology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA. Electronic address: j-wilkins@md.northwestern.edu. Vanderbilt University, Nashville, TN, USA. Electronic address: j.jeffreycarr@vanderbilt.edu. Wake Forest University, Winston-Salem, NC, USA. Electronic address: jgterry@wakehealth.edu. Department of Preventive Medicine, Division of Gastroenterology & Hepatology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA. Electronic address: dlj@northwestern.edu. Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, MN, USA. Electronic address: jacob004@umn.edu. Department of Preventive Medicine, Division of Gastroenterology & Hepatology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA. Electronic address: carnethon@northwestern.edu.