Association between puberty and delayed phase preference.

Adolescent sleep patterns, circadian timing, and sleepiness at a transition to early school days.

Adolescent Sleep Working Group and Committee on Adolescence.

Wahlstrom K.

Dretzke B.

Gordon M.

Peterson K.

Edwards K.

Gdula J.

Examining the Impact of Later School Start Times on the Health and Academic Performance of High School Students: A Multi-Site Study.

Center for Applied Research and Educational Improvement. University of Minnesota

St Paul, MN