A, Samsudin, Yahya N, Wan Mat WR, Masdar A, Liu CY, and Izaham A. 2019. “Listening to Islamic Praises (Dzikr) Is More Effective in Reducing Perioperative Anxiety Levels When Compared to Nature-Based Sounds in Muslim Patients Undergoing Surgery Under Regional Anaesthesia”. IIUM Medical Journal Malaysia 18 (3). https://doi.org/10.31436/imjm.v18i3.191.