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Table 1 The study is being recruited into four cohorts. The different number of visits is separated by 12 weeks

From: Longitudinal profiling of the gut microbiome in patients with psoriatic arthritis and ankylosing spondylitis: a multicentre, prospective, observational study

Group Health Status Number of subjects Number of visits per subject
Group A Psoriatic Arthritis 15 Screening, visit 1,2 and 3
Group B Psoriatic Arthritis 50 Screening and visit 1
Group C Ankylosing Spondylitis 30 Screening and visit 1
Group D Healthy volunteers 30 Screening and visit 1