[1] Univ Ghent, Fac Med, Dept Publ Hlth, B-9000 Ghent, Belgium
[2] Al Quds Univ, Nutr & Hlth Res Inst, Al Quds, Israel
[3] Carleton Univ, Dept Psychol, Ottawa, ON K1S 5B6, Canada
[4] NICHHD, NIH, DHHS, Bethesda, MD 20892 USA
[5] Fac Med Toulouse, INSERM, U558, F-31073 Toulouse, France
[6] Natl Inst Hlth Dev, Dept Chron Dis, Tallinn, Estonia
[7] Univ Jyvaskyla, Res Ctr Hlth Promot, Dept Hlth Sci, Jyvaskyla, Finland