Cold Agglutinin Titer Cold Agglutinin Titer Cold Agglutinin Titer Cold Agglutinin Titer Cold Agglutinin Titer Cold Agglutinin Titer Cold Agglutinin Titer Cold Agglutinin Titer Cold Agglutinin Titer Cold Agglutinin Titer Cold Agglutinin Titer Cold Agglutinin Titer Cold Agglutinin Titer Cold Agglutinin Titer Cold Agglutinin Titer