Daytime sleepiness among adolescents in six Asian regions: a cross-sectional survey

- Takeuchi, S.; Tanida, K.; Ikeda, M.; Miyagawa, S.; Nagai, T.; Mekviwattanawong, C.; Phuphaibul, R.; Nailes, J. M.; Ligot, J.; Chien, W. T.; Lee, R.