<prompt> Which of the following drugs is not associated with pure red cell aplasia?PhenytoinIsoniazidErythropoietinChloramphenicol  <response>: c. ErythropoietinRef: Nelsons 20e p 2362-2371, Ghai 8e p 345-347Classification of pure red cell aplasiaAcquired Self-limited: Transient erythroblastopenia of childhood Thymoma Hereditary: Congenital pure red cell aplasia Diamond- Blackfan syndromeQ Lymphomas: Hodgkins, or Non Hodgkins, large granular Lymphoma Paraneoplastic to solid tumors Connective tissue disorders: SLE, JRA, RA Virus: Parvovirus B19Q, hepatitis, HTLV, EBV Drugs: phenytoin, azathioprine, chloramphenicol, isoniazid Post ABO incompatible transplantQ 