Fernandes, J F, L M Pedro, J P Freire, A Correia, M M Pedro, A Damião, R Pereira, J P Alves, and C Martins. 1992. “ Non-Invasive Study”. Acta Médica Portuguesa 5 (1). Lisbon, Portugal:5-10. https://doi.org/10.20344/amp.3181.