Almramhi, K.; Aljehani, M.; Bamuflih, M.; Alghamdi, S. .; Banser, S. .; Almousa, A. .; ALABDULWAHAB, S. .; Al-Ebrahim, K. . Frequency and Risk Factors of Unplanned 30-Day Readmission After Open Heart Surgeries: A Retrospective Study in a Tertiary Care Center. HSF 2022, 25, E608-E615.