Birth order and age at marriage in the Arab levant.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001722:Birth Order; D002835:Christianity; D003431:Cross-Cultural Comparison; D005006:Ethnicity; D005260:Female; D006801:Humans; D008297:Male; D008393:Marriage; D012067:Religion; D012737:Sex Factors; D013593:Syria