The cause of the symptoms you are expected to be caused by an infection in respiratory system. With the threat from tobacco use research, pai, which will cause the symptoms of the disease harder version.
The cause of the symptoms you would expect from a respiratory infection. The problem with risk factors of smoking. This causes the symptoms of the force.
The cause of the symptoms you are expected to be caused by infection in respiratory system. The problem of risk factors to smoking. The symptoms of the disease model with strength.