The Somnology group of the Dpt. of Respiratory Diseases at the Ghent University Hospital will commit to taking a leading role in the development of new innovative approaches to characterising sleep disorders in general and obstructive sleep apnea (OSA) in particular. Such new approach is mandatory now that it has become clear that OSA and many other sleep disorders are heterogeneous conditions that present as distinct phenotypes and frequently overlap. To come to a structures approach, the development of a new comprehensive questionnaire covering all aspects of sleep and sleep disorders seems important. The setting of academic research units in the Sleep Revolution consortium offers a unique opportunity for the development and validation of this new tool.