title: Authors' reply.
authors.affiliation: Department of Medical Gastroenterology, Government Medical College, Thiruvananthapuram, Kerala, India.
authors.forename: Rooby Erachamveettil
authors.initials: RE
authors.lastname: Hamza
authors.affiliation: Department of Medical Gastroenterology, Government Medical College, Thiruvananthapuram, Kerala, India.
authors.forename: Mashhood Padincharepurathu
authors.initials: MP
authors.lastname: Villyoth