The effect of aromatherapy using Lavender (Lavandula angustifolia Miller) and Citrus aurantium L. extracts to treat anxiety of patients undergoing laparoscopic cholecystectomy: A randomized clinical trial in Iran. (2018). Biomedical Research and Therapy, 5(3), 2096-2110. https://doi.org/10.15419/bmrat.v5i3.423