title: Letter: Comparing serologic data.
mesh_terms: D000914:Antibodies, Viral / Q000032:analysis*; D004854:Herpesvirus 4, Human; D006801:Humans; D007074:Immunoglobulin G; D008180:Lupus Erythematosus, Systemic / Q000276:immunology* / Q000382:microbiology; D012698:Serologic Tests
chemical_list: D000914:Antibodies, Viral; D007074:Immunoglobulin G