[Letter: Diagnostic value of rheumatoid factor and antistreptolysin titer].
D000989:Antistreptolysin / Q000032:analysis*; D006801:Humans; D012216:Rheumatic Diseases / Q000097:blood; D012217:Rheumatoid Factor / Q000032:analysis*
D000989:Antistreptolysin; D012217:Rheumatoid Factor
Diagnostischer Wert von Rheumafaktor und Antistreptolysintiter