@article{Cancho-Candela2007,
author = {Cancho-Candela, R. and Andrés-de Llano, J.M. and Ardura-Fernández, J.},
title= {Decline and loss of birth seasonality in Spain: analysis of 33 421 731 births over 60 years},
year = {2007},
journal = {Journal of Epidemiology and Community Health},
volume = {61},
number = {8},
pages = {713},
}