title: Two heads are better than one.
authors.forename: D
authors.initials: D
authors.lastname: Bonn
mesh_terms: D001943:Breast Neoplasms; D006801:Humans; D007938:Leukemia; D008297:Male; D016522:Oncology Service, Hospital; D010820:Physicians; D014430:Twins, Monozygotic; D006113:United Kingdom