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Grydeland, May, Mona Bjelland, Sigmund Alfred Anderssen, Knut-Inge Klepp, Ingunn Holden Bergh, Lene Frost Andersen, Yngvar Ommundsen, a Nanna Lien. Effects of a 20-month Cluster Randomised Controlled School-based Intervention Trial On BMI of School-aged Boys and Girls: The HEIA Study. BMJ Publishing Group, 2014.

Grydeland, May, et al. Effects of a 20-month Cluster Randomised Controlled School-based Intervention Trial On BMI of School-aged Boys and Girls: The HEIA Study. BMJ Publishing Group, 2014.