TY  - RPRT
TI  - Grading in soft tissue tumors: principles and problems.
AU  - A M Oliveira
AU  - A G Nascimento
PY  - 2001
DO  - 10.1007/s002560100408
UR  - https://pubmed.ncbi.nlm.nih.gov/11685477/
ID  - 11685477
ER  -