Research Background and Rationale At the end of December 2019, pneumonia of unknown origin was detected in the hospitals of Wuhan city, China, and reported to the WHO country office for the first time [1-3]. After a few days, the Chinese government has confirmed the human-to-human transmission of
Irritable bowel syndrome (IBS), a common chronic gastrointestinal disorder characterized by abdominal pain and alteration of bowel habits in the absence of structural abnormality, has a prevalence of approximately 15% in western populations1,2. Patients with IBS can be classified by their