[The problem of the effect of respiration by mouth on the capacity of breathing in children of school-age].
D002648:Child; D006128:Growth; D006801:Humans; D009055:Mouth; D009666:Nose; D012119:Respiration / Q000502:physiology*; D013147:Spirometry
Problem wpływu oddychania przez usta na sprawność oddechowa u dzieci w wieku szkolny.