Sleeping habits of adolescents in relation to their physical activity and exercise output: results from the ELSPAC study
Jan Máchal, Filip Zlámal, Lubomír Kukla, Jan Švancara, Hynek Pikhart, Julie Bienertová-Vašků
J Epidemiol Community Health Dec 2018, 72 (12) 1141-1146; DOI: 10.1136/jech-2018-210970