| New on the MedlinePlus Teen Health page: 08/06/2015 02:00 PM EDT Less than 18 percent of high schools, middle schools start at 8:30 a.m. or later ![]() Source: HealthDay 08/04/2015 02:00 PM EDT But findings are at odds with previous research ![]() Source: HealthDay U.S. National Library of Medicine · 8600 Rockville Pike · Bethesda, MD 20894 · 888-346-3656 |
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