Almeida, M. M., Mendonça, M. E., Sousinha, M., Martins, A. G., de Sousa, J. V., & Soares, J. (1991). Application of aspiration cytology in the diagnosis of tumor lesions in children. Acta Médica Portuguesa, 4(2), 71–5. https://doi.org/10.20344/amp.3331