title: [A case of hypoproconvertinemia in a boy with recurrent nosebleed].
mesh_terms: D002648:Child; D004844:Epistaxis / Q000209:etiology*; D005168:Factor VII Deficiency / Q000150:complications*; D006801:Humans; D008297:Male; D012008:Recurrence
vernacular_title: Przypadek hipoprokonwertynemii u chłopca z nawracajacymi krwawieniami z nosa.