@article{Liddell2015,
author = {Liddell, C. and Morris, C. and Thomson, H. and Guiney, C.},
title= {Excess winter deaths in 30 European countries 1980–2013: A critical review of methods},
year = {2015},
doi = {10.1093/pubmed/fdv184},
volume = {38},
pages = {806--814},
}