Wirz-Justice Anna, Terman Michael, Oren Dan A, Goodwin Frederick K, Kripke Daniel F, Whybrow Peter C, Wisner Katherine L, Wu Joseph C, Lam Raymond W, Berger Mathias, Danilenko Konstantin V, Kasper Siegfried, Smeraldi Enrico, Takahashi Kiyohisa, Thompson Chris, van den Hoofdakker Rutger H
Science. 2004 Jan 23;303(5657):467-9. doi: 10.1126/science.303.5657.467c.