Department of PathophysiologyCollege of Basic Medical Sciences,China Medical University 92.Beier street, Heping District,Shenyang, 110001,P. R. China

Department of Human Genetics, Sri Ramachandra Deemed UniversityPorur, Chennai, Tamil Nadu _ 600 116,India.

Department of Biological Sciences, School of Pure and Applied Sciences, South Eastern University College (A Constituent College of the University of Nairobi), Nairobi, Kenya

Division of Gastroenterology,Department of Internal Medicine, The Johns Hopkins University School of Medicine,Baltimore, MD,USA