Biagi, E A persistent severe autoimmune hemolytic anemia despite apparent direct antiglobulin test negativization. [electronic resource] - Haematologica Nov 1999 - 1043-5 p. digital Publication Type: Case Reports; Journal Article ISSN: 0390-6078 Subjects--Topical Terms: Anemia, Hemolytic, Autoimmune--diagnosisCoombs Test--methodsFalse Negative ReactionsHumansInfant