hay fever
These results highlight       the different environmental risk factors for hay fever and allergic asthma in       patients, as on days of rainfall following high grass pollen count, the risk for        asthma sufferers is far greater than on days of high pollen count with no       associated rainfall.
These results highlight       the different environmental risk factors for  @SUBJECT$  and allergic asthma  @PREDICAT$         @OBJECT$ , as on days of rainfall following high grass pollen count, the risk for        asthma sufferers is far greater than on days of high pollen count with no       associated rainfall.