a study on clinical signs of tuberculosis patients in urmia a gholami , bsc l moosavi jahromi ,bsc received: 11 aug, 2009 accepted: 25 oct, 2009 abstract background & aims: tuberculosis is a major health problem worldwide, especially in developing countries. the warning signs of pulmonary tuberculosis are chronic cough with sputum that is usually accompanied by bloody sputum, and sometimes the ...