TY  - RPRT
TI  - Ankylosing spondylitis: yesterday and today.
AU  - D G Spencer
AU  - R D Sturrock
AU  - W W Buchanan
PY  - 1980
DO  - 10.1017/s0025727300039788
UR  - https://pubmed.ncbi.nlm.nih.gov/6990121/
ID  - 6990121
ER  -