title: Letter: Reply to "message from a referee on the Elston method".
mesh_terms: D001789:Blood Group Antigens; D002875:Chromosomes; D005260:Female; D005796:Genes; D008040:Genetic Linkage; D006801:Humans; D008722:Methods; D011247:Pregnancy; D011618:Psychotic Disorders / Q000235:genetics*; D014427:Twins
chemical_list: D001789:Blood Group Antigens