Charlotte L. Ridgway, Søren Brage, Stephen J. Sharp, Kirsten Corder, Kate L. Westgate, Esther M. van Sluijs, Ian M. Goodyer, Pedro C. Hallal, Sigmund A. Anderssen, Luis B. Sardinha, Lars Bo Andersen, Ulf Ekelund
PLoS One. 2011; 6(1): e16125. Published online 2011 January 12. doi: 10.1371/journal.pone.0016125