Table 1.

Control group diagnoses.

Category of Control Disease	Diagnosis
Infectious diseases (n = 69)	Septicemia (5); pneumonia (16); encephalitis or meningitis (6); infectious endocarditis (5); viral infections (13); tuberculosis (18); others (6)^*
Neoplasms (n = 19)	Hematological malignancies (18); multiple myeloma (1)
Systemic autoimmune diseases (n = 52)	Systemic lupus erythematosus (11); systemic vasculitis (10); polymyositis or dermatomyositis (9); others (14)^**

↵* Cholecystitis (2), liver abscess (2), pelvic inflammatory disease (1), and maxillofacial cellulitis (1).
↵** Rheumatoid arthritis (3), Behçet’s disease (1), panniculitis (4), Sjögren’s Syndrome (1), undifferentiated connective tissue disease (2), sarcoidosis (1), necrotic lymphadenitis (2).