Authors: E D Weitzman; C A Czeisler; R M Coleman; A J Spielman; J C Zimmerman; W Dement; G Richardson; C P Pollak Journal: Arch Gen Psychiatry Date: 1981-07
Authors: Nina Buscemi; Ben Vandermeer; Nicola Hooton; Rena Pandya; Lisa Tjosvold; Lisa Hartling; Sunita Vohra; Terry P Klassen; Glen Baker Journal: BMJ Date: 2006-02-10