Umbilical hernia: what happens after age 5 years?
D044383:Black People; D002648:Child; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D006554:Hernia, Umbilical / Q000601:surgery / Q000628:therapy*; D006801:Humans; D008396:Maryland; D001741:Black or African American