Hereditary and exogenous etiological factors in ankylosing spondylitis. Ankylosing spondylitis in two sets of monozygotic twins.
D004194:Disease; D004200:Diseases in Twins; D006801:Humans; D013167:Spondylitis, Ankylosing; D014427:Twins; D014430:Twins, Monozygotic
TWINS/diseases