Standardized Questionnaires:For not collaborative patients,< 4 years:Standardized questionnaire collecting anamnestic-clinical data;Stress Parenting Index questionnaire and COPE brief questionnaire(Questionnaire assessing adaptation strategies of parents) For collaborative patients, >4 years:Standardized questionnaire collecting anamnestic-clinical data;Fractional exhaled nitric oxide (FeNO) assessment (oral and alveolar);Spirometry;6-minutes walk test (WT 6'); Prick tests;Children Quality of life questionnaire (KINDL questionnaire);Psychological test (Raven Matrices);Stress Parenting Index questionnaire and COPE brief questionnaire (Questionnaire assessing adaptation strategies of parents).

For not collaborative patients, under the age of 4 years:

• Standardized questionnaire collecting anamnestic-clinical data
• Stress Parenting Index questionnaire and COPE brief questionnaire(Questionnaire assessing adaptation strategies of parents).

For collaborative patients, over the age of 4 years:

• Standardized questionnaire collecting anamnestic-clinical data
• Fractional exhaled nitric oxide (FeNO) assessment (oral and alveolar )
• Spirometry
• 6-minutes walk test (WT 6')
• Prick tests
• Children Quality of life questionnaire (KINDL questionnaire)
• Psychological test (Raven Matrices)
• Stress Parenting Index questionnaire and COPE brief questionnaire (Questionnaire assessing adaptation strategies of parents)

Spirometry

QoL Questionnaire