title: Social class and season of birth.
mesh_terms: D001723:Birth Rate; D036861:Delivery, Obstetric; D005260:Female; D006693:Holidays; D006801:Humans; D007086:Illegitimacy; D008393:Marriage; D011247:Pregnancy; D012621:Seasons; D012725:Sexual Behavior; D012923:Social Class; D006113:United Kingdom