@misc{indiciaee846b1452eed, title = {Retroperitoneal malignant cyst. Case report.}, author = {K Melén and J Sandermann and A Stubberöd and P Boiesen}, year = {1991}, url = {https://pubmed.ncbi.nlm.nih.gov/1687258/}, note = {Source identifier: 1687258} }