TY  - RPRT
TI  - Ankylosing spondylitis and exercise.
AU  - A J Richards
PY  - 1989
DO  - 10.1093/rheumatology/28.4.365-a
UR  - https://pubmed.ncbi.nlm.nih.gov/2743103/
ID  - 2743103
ER  -