Particularly at risk are patients with diseases of the gastrointestinal tract.

To screen for a disease or infection of the urinary tract.

Yellow nails may be a sign of respiratory tract diseases.

Infection usually results in disease of the gastrointestinal or respiratory tract.

It is also known that Roller had serious diabetes, or a disease of the digestive tract.

It was during this time that he researched diseases of the gastrointestinal tract.

Changes in bowel habit may indicate disease of the gastrointestinal tract.

Presented annually to an individual for outstanding contributions to the study of genitourinary tract disease.

Cat flu is the common name for a feline upper respiratory tract disease.

In first place are the diseases of the gastrointestinal tract and the kidneys.