CURTIS, A C Congenital absence of the valves in the veins as a cause of varicosities. [electronic resource] - Archives of dermatology and syphilology May 1947 - 639-43 p. digital Publication Type: Journal Article ISSN: 0096-6029 Standard No.: 10.1001/archderm.1947.01520050041005 doi Subjects--Topical Terms: HumansVaricose Veins--congenitalVascular MalformationsVeins--abnormalities