title: A challenge to solve "Lichtman's riddles".
authors.forename: C I
authors.initials: CI
authors.lastname: Civin
mesh_terms: D001853:Bone Marrow / Q000473:pathology; D006410:Hematopoiesis; D006412:Hematopoietic Stem Cells / Q000473:pathology; D006801:Humans; D007951:Leukemia, Myeloid / Q000145:classification* / Q000473:pathology*