“Perceived Barriers of Utilization of Non- Pharmacological Pain Management Among Post- Operative Patients (Nurse’s Perspectives) at Khartoum Public Hospitals, 2021-2022”. 2022. International Journal of Scientific Research and Management (IJSRM) 10 (08): 668-73. https://doi.org/10.18535/ijsrm/v10i08.mp01.