title: What is "normal"? Logical aspects of the question of homosexual behavior.
mesh_terms: D003469:Culture; D004200:Diseases in Twins; D005796:Genes; D012739:Gonadal Steroid Hormones / Q000502:physiology; D006716:Homosexuality / Q000150:complications / Q000209:etiology*; D006801:Humans; D008297:Male; D012925:Social Conformity; D012931:Social Environment; D014481:United States
chemical_list: D012739:Gonadal Steroid Hormones