Franz Halberg1
, Germaine Cornélissen1
, George Katinas1
, Elena V Syutkina2
, Robert B Sothern1
, Rina Zaslavskaya3
, Francine Halberg1
, Yoshihiko Watanabe4
, Othild Schwartzkopff1
, Kuniaki Otsuka5
, Roberto Tarquini6
, Perfetto Frederico6
and Jarmila Siggelova7 
1Halberg Chronobiology Center, University of Minnesota, Minneapolis, MN, USA
2Institute of Pediatrics, Scientific Center for Children's Health, Academy of Medical Sciences, Moscow, Russia
3Department of Cardiology, Hospital #60, Moscow, Russia
4Tokyo Women's Medical University, Daini Hospital, Tokyo, Japan
5Tokyo Women Medical University, School of Medicine, Daini Hospital, Division of Neurocardiology and Chronoecology, Nishiogu 2-1-10, Arakawa-ku, Tokyo 116-856, Japan
6Department of Internal Medicine, University of Florence, Italy
7Clinic of Functional Diagnostics and Rehabilitation, St. Anna Faculty Hospital and Masaryk University of Brno, Pekaská 53, 656 91, Brno, Czech Republic