1 Sleep and Fatigue Research Laboratory, Warfighter Performance Department, Naval Health Research Center, 140 Sylvester Road, San Diego, CA 92101, USA. Electronic address: Rachel.r.markwald.civ@mail.mil.
2 University of Pittsburgh School of Medicine, NOCTEM, 218 Oakland Avenue, Pittsburgh, PA 15213, USA. Electronic address: anne.germax@upmc.edu.