Stephens, W.E., Calder, A., Newton, J. 2004

Joossens, L., Merriman, D., Ross, H. et al. 2009

Lee, J.M., Chen, H.F. et al. 2008

Wiltshire, S., Bancroft, A., Amos, A. et al. 2001

Cantrell, J., Hung, D., Fahs, M.C. et al. 2008

Callaghan, R.C., Veldhuizen, S., Leatherdale, S.T. et al. 2009

Townsend, J., Roderick, P., Cooper, J. 1994

Joossens, L., Raw, M. 1998

Ribisl, K.M., Kim, A.E., Williams, R.S. 2001

Goolsbee, A., Lovenheim, M.F., Slemrod, J.B. et al. 2009