Annelise E. von Bergen Granell

Low-dose ketamine infusion reduces postoperative hydromorphone requirements in opioid-tolerant patients following spinal fusion: A randomised controlled trial

G. Echevarría, A. Atchabahian, G. Cuff, 2019, European journal of anaesthesiology.

Both lavender fleur oil and unscented oil aromatherapy reduce preoperative anxiety in breast surgery patients: a randomized trial.

T. Blanck, G. Shanmugam, R. Kline, 2016, Journal of clinical anesthesia.