Almeida, M M, M E Mendonça, M Sousinha, A G Martins, J V de Sousa, and J Soares. 1991. “Application of Aspiration Cytology in the Diagnosis of Tumor Lesions in Children”. Acta Médica Portuguesa 4 (2). Lisbon, Portugal:71-5. https://doi.org/10.20344/amp.3331.