THE PREVALENCE OF IRRITABLE BOWEL SYNDROME AMONG ALMAAREFA UNIVERSITY - Amar Fathi Khalifa , Anas Abdulrhman Alqassem , Zied Abdullah Aljubour, Housam Saeed Alzahrani, Mohammed Abdulrhman Almuhaidib , Salman Sunaitan Almutairi , Khaled Abdullah Alshareef, Hisham Saleh Almalki (2019)