Piltcher-da-Silva, R., Sasaki, V. L., Piltcher-Recuero, M., Chiconelli Zangari, M. A., Bora Ruggeri, J. R., Cravo Bettini, L. F., … Anselmi Junior, R. A. (2022). Retroperitoneal fetus in fetu in a 65-year-old man. Clinical and Biomedical Research, 42(2). https://doi.org/10.22491/2357-9730.121588