Letter: response to: Learning to EXHALE! Don't catch the flu this season (October 2008).
Flood
Francis A
FA
D000368:Aged; D003080:Cold Temperature; D045853:Exhalation; D006801:Humans; D007251:Influenza, Human / Q000517:prevention & control*; D007858:Learning; D012119:Respiration; D012621:Seasons