TY  - JOUR
A1  - Cancho-Candela, R.
A1  - Andrés-de Llano, J.M.
A1  - Ardura-Fernández, J.
T1  - Decline and loss of birth seasonality in Spain: Analysis of 33,421,731 births over 60 years
Y1  - 2007
DO  - 10.1136/jech.2006.050211
VL  - 61
IS  - 8

ER  -