Circadian rhythms in urinary cortisol and 6-sulfatoxy melatonin in Brazilian nurses on day and night shifts - Fischer, Frida Marina; Borges, F. N. S.; Fonseca, M B; Moreno, Claudia Roberta de Castro; Benedito-Silva, Ana Amélia; Pires, M. L. N.; Rotenberg, L; Smolensky, Michael Hale; Sackett-Lundeen, Linda; Haus, Erhard (International Congress of Applied Chronobiology and Chronomedicine, 2009)