Comparison of the Effects of a Melissa officinalis L. and Valerian Combination With Clonidine on Anxiety, Hemodynamic Changes, and Shivering in Knee Replacement Surgery: A Randomized Controlled Trial. - Hasanzadeh Sablouei F; Nasiri Formi E; Akbari H; Esmaeil Shafiei S; Davoodi A (Journal of perianesthesia nursing : official journal of the American Society of PeriAnesthesia Nurses, 2026)