TY  - RPRT
TI  - Prone knee-flexion provocative testing for lumbar disc protrusion.
AU  - L D Herron
AU  - H C Pheasant
DO  - 10.1097/00007632-198001000-00012
UR  - https://pubmed.ncbi.nlm.nih.gov/6444765/
ID  - 6444765
ER  -