title: The Dracula factor--red cell loss due to repeated blood sampling.
authors.forename: J
authors.initials: J
authors.lastname: Tiffin
authors.forename: P
authors.initials: P
authors.lastname: Jacobs
mesh_terms: D000740:Anemia / Q000209:etiology; D001800:Blood Specimen Collection / Q000639:trends; D001815:Bloodletting / Q000009:adverse effects*; D006801:Humans; D013997:Time Factors