Jatmiko, Agus. “The Effectiveness of Preoperative Nursing Visitation in Reducing the Level of Preoperative Anxiety and Postoperative Pain in Elective Surgery Patients: A Systematic Literature Review”. Journal of Global Research in Public Health 8, no. 2 (December 29, 2023): 159–169. Accessed September 11, 2025. https://www.jgrph.org/index.php/JGRPH/article/view/474.