Effects of naps at work on the sleepiness of 12-hour night shift nursing personnel - Borges, Flávio Notarnicola da Silva; Fischer, Frida Marina; Rotenberg, Lúcia; Soares, Nilson Silva; Fonseca, Mauro Breviglieri; Smolensky, Michael Hale; Sackett-Lundeen, Linda; Haus, Erhard; Moreno, Claudia Roberta de Castro (Sleep Science, 2009)