| http://www.w3.org/ns/prov#value | - This time, a new eye doctor asked Evan if he had back pain.Genetic tests revealed Evan was positive for HLA-B27, a marker for ankylosing spondylitis (AS), a relatively common but incurable form of inflammatory arthritis that strikes young adults, causing chronic pain and sometimes more serious damage to the heart and other organs.It was pretty daunting, knowing I would have this for the rest of m
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