“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”, Biomed. Res. Ther., vol. 5, no. 3, pp. 2096–2110, Mar. 2018, doi: 10.15419/bmrat.v5i3.423.