Table 2.

Search Strategy and Results

Search Term(s)	Number of Citations*
Sleep Disorders, Circadian Rhythm	436
Chronobiology Disorders	131
Work Schedule Tolerance, AND Sleep	687
Jet Lag Syndrome	119
Delayed Sleep Phase Syndrome	111
Advanced Sleep Phase Syndrome	26
Irregular Sleep-Wake Disorder	0
Non–24-Hour Sleep-Wake Disorder	2
Chronotherapy combined with Sleep Disorders	35
Phototherapy combined with Sleep Disorders	127
Melatonin combined with Sleep Disorders	254
Blindness combined with Sleep Disorders	44
Morningness Eveningness	89
Total	2084

^*Found in an iterative search strategy (see text)