Table 1.

Patients’ demographics

Patient number	Age	Gender	Systemic rheumatologic disease
Patient 1	18	Male	None
Patient 2	67	Male	Rheumatoid arthritis
Patient 3	64	Female	Rheumatoid arthritis
Patient 4	64	Female	HLA-B27 ankylosing spondylitis
Patient 5	61	Female	None
Patient 6	36	Male	None
Patient 7	65	Female	None
Patient 8	42	Female	None
Patient 9	35	Female	None

HLA: Human leukocyte antigen