Objectives: To identify the respective contributions of back-translations and of the expert committee in the process of cultural adaptation of patient reported outcome with an experimental design in the adaptation process :

Four translations of a questionnaire will be produced:

• A simple translation by two translators, who serves as the basis for the three other translations
• A translation made with the use of a back-translation.
• A translation with review by an expert committee.
• A translation the use of a back-translation and review by an expert committee.

Properties of each translation will be analyzed and compared

Inclusion Criteria:

• Adult (other 18 years)
• Able to read, understand and answer the adapted questionnaire
• Having a medical condition targeted by the questionnaire

Patient with a chronic condition, susceptible to answer the adapted questionnaire