TY  - RPRT
TI  - Ankylosing spondylitis and multiple sclerosis.
AU  - N Libbrecht
AU  - J De Bleecker
DO  - 10.1080/17843286.1999.11754206
UR  - https://pubmed.ncbi.nlm.nih.gov/10192975/
ID  - 10192975
ER  -