1. Li Chiu Kong Family Sleep Assessment Unit, Department of Psychiatry and
2. Department of Psychology, The University of Hong Kong and
3. The State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region, China;
4. New Territories East Cluster, Hospital Authority, Hong Kong Special Administrative Region, China; and
5. Department of Pediatrics, The Chinese University of Hong Kong, Shatin, Hong Kong Special Administrative Region, China;
6. School of Psychology, Université Laval and Centre de recherche CERVO, Quebec City, Canada