TY  - RPRT
TI  - Introduction to manipulation.
AU  - K A Keir
AU  - G C Goats
PY  - 1991
DO  - 10.1136/bjsm.25.4.221
UR  - https://pubmed.ncbi.nlm.nih.gov/1810618/
ID  - 1810618
ER  -