Majed Abdullah Alanazi, Humaidi Ali Alanazi, Ahmed Helail Aldhafeeri, Qaisum Awdah Alenazi, Fahad Dakel Alharbi, Faleh Awad Alharbi. “Reducing Preoperative Anxiety in Patients Scheduled for Knee Replacement Surgery: A Preventive Controlled and Randomized Clinical Trial of Nursing Health Management”. Journal of Population Therapeutics and Clinical Pharmacology, vol. 30, no. 1, Jan. 2023, pp. 515-20, https://jptcp.com/index.php/jptcp/article/view/4916.