Survey of blood bank physicians and medical directors.
D000288:Administrative Personnel; D000486:Allergy and Immunology; D001771:Blood Banks; D004502:Education, Medical, Continuing; D006405:Hematology; D006801:Humans; D008511:Medicine; D010336:Pathology; D010820:Physicians; D013038:Specialization; D011795:Surveys and Questionnaires; D014481:United States