Thiruvenkatarajan, V., Dharmalingam, A., Van Wijk , R. M., Ludbrook, G., Wong, D. T., Quail, A., Arenas, G., Wahba, M., Liu, W.-M., Zaw, Y., Steiner, R., Tran, A., Currie, J., Kadam, V. R.. Wiley-Blackwell; 2022. Effect of high-flow vs. low-flow nasal plus mouthguard oxygen therapy on hypoxaemia during sedation: a multicentre randomised controlled trial.