Bronchial asthma is a worldwide disease, which has nothing to do with age and gender. Along with the degeneration of environment, which is caused by of the pollution, the number of patients is increasing as time goes on. So the issue of asthma has been paid more attention. My mentor professor Xu believes that asthma is caused by both introgenous factors and exogenous factors. It starts from the lung, the spleen and the kidney, and sputum,the pathological product, influences the lung mainly. But that is not ...
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