Román-Fernández, Ilce V Letter to the editor: "The association of CD40 polymorphism (rs1883832C/T) and soluble CD40 with the risk of systemic lupus erythematosus among Egyptian patients". [electronic resource] - Clinical rheumatology 05 2019 - 1529-1530 p. digital Publication Type: Letter; Comment ISSN: 1434-9949 Standard No.: 10.1007/s10067-019-04491-8 doi Subjects--Topical Terms: EgyptHumansLupus Erythematosus, SystemicPolymorphism, Genetic