The EuroLight Project was submited to the National Ethical and Research Committee (Comité Nationale d'Ethique et de Recherche-Luxembourg).

The Study Protocol presented:

• Methodology
• Questionnaire
• Informed consent to the partipants
• Information letter to the participants
• Agreement of participant institutions (Study centers)
• Time schedule
• Finance

On the 29th of September 2008 the National Ethical and Research Committee (Luxembourg - CNER-Commité National d'Ethique et de Recherche) approved the Eurolight protocol