Correspondence to Dr Rasmus Oestergaard Nielsen, Department of Public Health, Section for Sports Science, Aarhus University, Aarhus 8000, Denmark; roen{at}ph.au.dk Background It is widely accepted ...
Correspondence to Dr Eivind Schjelderup Skarpsno, Department of Public Health and Nursing, Norwegian University of Science and Technology, Trondheim, Norway; eivind.s.skarpsno{at}ntnu.no Although ...
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