What aspects of shiftwork influence off-shift well-being of healthcare workers? - Barnes-Farrell, Janet L; Davies-Schrils, Kimberly; McGonagle, Alyssa; Walsh, Benjamin; Milia, Lee Di; Fischer, Frida Marina; Hobbs, Barbara B.; Kaliterna, Ljiljana; Tepas, Donald (Applied Ergonomics, 2008)