If you find the material on this website useful, you will find that the two books ACES for PACES and KEYS to SUCCESS in Medicine complement the material on these sites and will enhance your studying and revision

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BOF 117
Epidemiology of Ankylosing spondylitis, all are true, except:
1-HLA is positive up to 90% of affected patients
2-its peak onset is between 6th and7th decades
3-male to female ration is 3:1
4-the overall incidence is 0.5% but may be much higher in Pima and Haida Indians
5-there is an association with faecal Klebsiella aerogenes carriage and chronic non infective prostatitis



 

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