1. Foundation for Biomedical Research, Washington, DC (
http://www.fbresearch.org
).
2. European Biomedical Research Association, London, UK (
http://www.ebra.org
).
3. Daan, S. in Biological Rhythms (ed. Aschoff, J.) 275–298 (Plenum, New York, 1981).
4. Horton, T.H. in Circadian Clocks (eds. Takahashi, J.S., Turek, F.W. & Moore, R.Y.) 45–57 (Kluwer/Plenum, New York, 2001).
5. Kas, M.J. & Edgar, D.M. Scheduled voluntary wheel running activity modulates free-running circadian body temperature rhythms in Octodon degus. J. Biol. Rhythms 16(1), 66–75 (2001).