title: Humidification during the cold weather to assist perennial allergic rhinitis patients.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D003080:Cold Temperature; D004777:Environment; D006361:Heating; D006801:Humans; D006813:Humidity; D008722:Methods; D008875:Middle Aged; D006255:Rhinitis, Allergic, Seasonal / Q000517:prevention & control*; D012621:Seasons