Autoimmune disease and chronic lymphocytic leukemia: autoimmune hemolytic anemia, pure red cell aplasia, and autoimmune thrombocytopenia. Diehl LF(1), Ketchum LH.Author information: (1)Department of Medicine, Walter Reed Army Medical Center, Washington, DC 20307-5001, USA.utoimmune disease and chronic lymphocytic leukemia: autoimmune hemolytic anemia, pure red cell aplasia, and autoimmune thrombocytopenia. Diehl LF(1), Ketchum LH. Author information:
A premature baby is one who is born too early, before 37 weeks. Premature babies may have more health problems and may need to stay in the hospital longer than babies born later. They also may have long-term health problems that can affect their whole lives. About 1 in 10 babies is born prematurely each year in the United States.
The normal length for a pregnancy is between 37 and 42 weeks. If a baby is born before the 37th week, or 259 days of gestation, the baby will be considered a premature baby.