Research Study: Blood Type Distribution in Patients with Diagnosed Lupus, Rheumatoid Arthritis, Psoriasis, and Ankylosing Spondylitis

Description of this study

Here are the direct links to the individual surveys.  Each survey includes detailed information about who should and who should not take the survey.

Lupus

Rheumatoid Arthritis

Psoriasis

Ankylosing Spondylitis