www.smileycolon.com  is the official website for this book and contains additional material of interest to the readers

http://digestive.niddk.nih.gov/ddiseases/pubs/constipation/ this link provides the information for public education from the national Institute of health related to constipation

http://digestive.niddk.nih.gov/ddiseases/pubs/ibs/ this link provides the information for public education from the national Institute of health related to irritable bowel syndrome

www.romecriteria.org this link provides information regarding the latest research and expert opinion about functional bowel disorders including irritable bowel syndrome and constipation.

http://clinicaltrials.gov/search/open/condition=%22Constipation%22  This link provides information regarding ongoing clinical trials in the field of constipation.

http://www.nlm.nih.gov/medlineplus/constipation.html this link provides information regarding constipation from national library of medicine in easy to understand terms. This link also provides additional links from reputed sources related to the diagnosis treatment and management of constipation.

http://patients.gi.org/find-a-gastroenterologist/ this link provides a search tool for finding a gastroenterologist who specializes in dealing with bowel disorders.

http://www.consumerreports.org/health/best-buy-drugs/constipation.htm this link provides consumer information for various over-the-counter products for constipation.

http://rehydrate.org/ors/made-at-home.htm this link provides information about how to make oral rehydration solution at home.