Botas, L., J. P. Freitas, J. P. Barroca, T. Laginha, and J. Martins e Silva. 1983. “Peripheral Tissue Oxygenation in Patients With Congestive Heart Failure”. Acta Médica Portuguesa 4 (1). Lisbon, Portugal:7-10. https://doi.org/10.20344/amp.4151.