Demographic information of the five individuals.

Mucin staining was done to determine the abundance of sulfomucins and sialomucins in the epithelium. The abundance of mucin stained goblet cells was further categorized according to a scoring index, where a score of 0 denotes no staining of that particular mucin type in epithelium, a score of 1 denotes 1–10% staining of that particular mucin type in epithelium, a score of 2 denotes 11–50% of staining of that particular mucin type in epithelium, and a score of 3 denotes >50% staining of that particular mucin type in epithelium. RC, LC and RE denote right colon, left colon and rectum, respectively.*denotes spousal partners living in the same household.