TY  - RPRT
TI  - Retrograde brushing: improved technique using a catheter-tip deflector system.
AU  - G Parra
AU  - W Seery
AU  - B Khashu
AU  - A T Cole
PY  - 1977
DO  - 10.1016/s0022-5347(17)58589-4
UR  - https://pubmed.ncbi.nlm.nih.gov/875140/
ID  - 875140
ER  -