Heritability and social support.
D005823:Genetics; D006801:Humans; D007398:Interpersonal Relations; D008957:Models, Genetic; D012919:Social Behavior; D012931:Social Environment; D012944:Social Support; D009626:Terminology as Topic; D014427:Twins / Q000235:genetics*; D014429:Twins, Dizygotic / Q000235:genetics; D014430:Twins, Monozygotic / Q000235:genetics