title: Research on environmental effects in genetic studies of aging: comments.
authors.affiliation: Laboratory of Genetics, University of Wisconsin, Madison, WI 53706, USA. jfcrow@wisc.edu
authors.forename: James F
authors.initials: JF
authors.lastname: Crow
authors.forename: Thomas E
authors.initials: TE
authors.lastname: Johnson
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000235:genetics*; D020022:Genetic Predisposition to Disease / Q000235:genetics; D006801:Humans; D040582:Inheritance Patterns; D008136:Longevity / Q000235:genetics*; D010641:Phenotype; D012931:Social Environment; D018433:Twin Studies as Topic