1. Fontaine DK. Measurement of nocturnal sleep patterns in trauma patients. Heart Lung. 1989;18(4):402–10.
2. Beecroft JM, Ward M, Younes M, et al. Sleep monitoring in the intensive care unit: comparison of nurse assessment, actigraphy and polysomnography. Intensive Care Med. 2008;34(11):2076–83.
3. van der Kooi AW, Tulen JH, van Eijk MM, et al. Sleep monitoring by actigraphy in short-stay ICU patients. Crit Care Nurs Q. 2013;36(2):169–73.
4. Bourne RS, Minelli C, Mills GH, et al. Clinical review: sleep measurement in critical care patients: research and clinical implications. Crit Care. 2007;11(4):226.
5. Friese RS, Diaz-Arrastia R, McBride D, et al. Quantity and quality of sleep in the surgical intensive care unit: are our patients sleeping? J Trauma. 2007;63(6):1210–4.