Effects of early physical exercise on later health - Authors' reply

Affiliations

• ¹ Department of Sport Medicine, Norwegian School of Sport Sciences, Oslo 0806, Norway. Electronic address: ulf.ekelund@nih.no.
• ² School of Public Health, Sydney University, Sydney, NSW, Australia.
• ³ Division of Preventive Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Department of Epidemiology, Harvard T H Chan School of Public Health, Boston, MA, USA.