TY  - RPRT
TI  - Intervertebral disc calcification with complete protrusion intraspongially.
AU  - W Edgren
AU  - E O Karaharju
AU  - O Snellman
PY  - 1973
DO  - 10.3109/17453677308989105
UR  - https://pubmed.ncbi.nlm.nih.gov/4770134/
ID  - 4770134
ER  -