TY  - RPRT
TI  - Problematic ureteropelvic junction obstruction.
AU  - S A Koff
PY  - 1987
DO  - 10.1016/s0022-5347(17)43157-0
UR  - https://pubmed.ncbi.nlm.nih.gov/3599261/
ID  - 3599261
ER  -