title: [Pterygium in the Central Sahara. Etiologic, clinical and etiopathogenetic study].
mesh_terms: D000328:Adult; D000368:Aged; D000462:Algeria; D044383:Black People; D002980:Climate; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009790:Occupations; D011625:Pterygium / Q000473:pathology; D014141:Trachoma / Q000473:pathology; D044465:White People
vernacular_title: Le pterygion au Sahara Central étude étiologique, clinique et étiopathogénique