title: Commentary.
authors.affiliation: Department of Haematology, Belfast City Hospital, Queen's University Belfast, Belfast, Northern Ireland. m.mcmullin@qub.ac.uk
authors.forename: Mary Frances
authors.initials: MF
authors.lastname: McMullin
mesh_terms: D000740:Anemia / Q000175:diagnosis*; D003490:Cyanosis / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008297:Male; D005082:Physical Exertion; D055544:beta-Globins / Q000235:genetics*
chemical_list: D055544:beta-Globins