Ankylosing spondylitis in tribal belt of Chhotanagpur region.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D005260:Female; D006801:Humans; D007194:India; D008297:Male; D008875:Middle Aged; D012737:Sex Factors; D012959:Socioeconomic Factors; D013167:Spondylitis, Ankylosing / Q000175:diagnosis / Q000453:epidemiology*