Edgren Gustaf, Lagiou Pagona, Trichopoulos Dimitrios, Adami Hans-Olov
Department of Epidemiology, Harvard School of Public Health, Harvard University, Boston, MA, USA.
Eur J Epidemiol. 2013 Apr;28(4):287-90. doi: 10.1007/s10654-013-9788-9. Epub 2013 Feb 27.