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. Author manuscript; available in PMC: 2016 Mar 14.
Published in final edited form as: Sleep Health. 2015 Mar 1;1(1):75–82. doi: 10.1016/j.sleh.2014.12.009

Figure 2.

Figure 2

Study protocol. The 8-week study consisted of 2 baseline weeks, an intervention week, a washout period, another 2 baseline weeks, and a second intervention week. Saliva samples were collected four times during the protocol for circadian phase assessment by DLMO.