Immunotherapy, hay fever, and asthma.
D000328:Adult; D001249:Asthma / Q000209:etiology / Q000517:prevention & control*; D002648:Child; D003888:Desensitization, Immunologic / Q000009:adverse effects; D006801:Humans; D006255:Rhinitis, Allergic, Seasonal / Q000150:complications / Q000517:prevention & control*