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The distribution of the age of airway malacia. The patients were aged from 1 month to 101 months, among which 369 children (male: 311, female: 58) were aged less than 12 months, 76 children (male: 57, female: 19) were aged 1~2 years, 9 children (male: 6, female: 3) were aged 2~3 years, and 5 children (male: 2, female: 3) aged more than 3 years old.
