TY  - RPRT
TI  - Mobility spectacles for ankylosing spondylitis.
AU  - S P Kelly
AU  - J K Storey
PY  - 1989
DO  - 10.1136/bmj.298.6689.1704
UR  - https://pubmed.ncbi.nlm.nih.gov/2503184/
ID  - 2503184
ER  -