31. Do doctors know what causes prematurity ? 32. Exposure during the first eight weeks of development can also lead to prematurity and fetal death. 33. Due to her prematurity , her immune system is failing and is diagnosed with an infection. 34. This would be appropriate information for " Retinopathy of prematurity " and " Preterm birth ". 35. Most studies also made insupportable assumptions about the effectiveness of care and the medical costs of prematurity . 36. These babies are at increased risk of prematurity , low birth weight, lifelong disability and death. 37. There is some new research suggesting there might be new methods to predict the likelihood of prematurity . 38. And the risks of prematurity can be far worse than the disease the surgery hopes to treat. 39. The latest findings bolster previous research linking prematurity to more subtle cognitive problems that may be permanent. 40. The latest findings bolster previous research linking prematurity to more subtle and long-term cognitive difficulties.