title: Commentary: Francis Galton and the twin method.
authors.affiliation: Church Barn, Chapel Street, Wiveton, Holt, Norfolk NR25 7TQ, UK. mgbulmer@btinternet.com
authors.forename: Michael
authors.initials: M
authors.lastname: Bulmer
mesh_terms: D004200:Diseases in Twins / Q000453:epidemiology* / Q000235:genetics*; D059647:Gene-Environment Interaction; D006801:Humans; D014427:Twins