Weekly school time is associated with socio-demographic, life-style and sleep-wake variables among working college students - Nagai, Roberta; Lowden, Arne; Moreno, Claudia Roberta de Castro; Luz, A A; Mussi, Marina Hurga; Conceicao, A B; Fischer, Frida Marina (Boo of abstracts and program [of] 20th International Symposium on Shiftwork and Working Time: biological mechanisms, recovery and risk management in the 24h society, 2011)