51.   Hospital admissions of children for respiratory problems showed a dramatic decrease that year, and then shot back up to previous levels the following year.

52.   Hospitals have reported more cases of respiratory problems and heat exhaustion.

53.   I also tried an ionizer from Sharper Image, which came highly recommended by a friend with respiratory problems.

54.   In March, at the Masters Championship in Naples, Fla., he dropped out because of upper respiratory problems.

55.   In this case, the pollutants produced by coal-burning are a known trigger for asthma and other respiratory problems that are exacting a growing toll on children.

56.   In the last several weeks, she had suffered some respiratory problems.

57.   It can cause respiratory problems including shortness of breath, chest pain and coughing for many, especially children and the elderly.

58.   It does cut ozone-forming compounds, which can cause respiratory problems.

59.   Its most common symptoms are sudden high fever, headache and upper respiratory problems.

60.   It was on that trek that Adams developed respiratory problems and was unable to keep up with the younger members of her group.