title: Extramarital involvement: fact and theory.
mesh_terms: D005006:Ethnicity; D005114:Extramarital Relations; D005260:Female; D006801:Humans; D008297:Male; D012071:Religion and Sex; D012111:Residence Characteristics; D012737:Sex Factors; D012725:Sexual Behavior; D012918:Social Alienation; D012945:Social Values; D012959:Socioeconomic Factors; D013997:Time Factors