RT Journal Article SR Electronic T1 Online-only: Many U.S. workers get too little sleep, report finds JF The Nation's Health JO Nations Health FD American Public Health Association SP E24 OP E24 VO 42 IS 5 A1 Teddi Dineley Johnson YR 2012 UL http://www.thenationshealth.org/content/42/5/E24.abstract AB