Alhashemi, A. S., H. Abdul-Muhsin, and A. A. A. Hussein. “Incidence and Risk Factors of Gastrointestinal Bleeding in ICU Patients: A Four-Year Cohort Study”. Academia Open, Vol. 8, no. 2, Sept. 2023, p. 10.21070/acopen.8.2023.7877, doi:10.21070/acopen.8.2023.7877.