Chaves, J., C. Morna, C. de Freitas, A. Malheiro, L. Marote Correia, A. Barros, and M. Da Luz Brazão. “An Audit of Oxygen Therapy Practices in an Internal Medicine Ward”. Internal Medicine, vol. 26, no. 4, Feb. 2022, pp. 292-6, doi:10.24950/rspmi/O/128/19/4/2019.