@article{Morales-Suarez Varela2009,
author = {Morales-Suarez Varela, M.M. and Aagaard Nohr, E. and Llopis-Gonzalez, A. and Nibo Andersen, A.-M. and Olsen, J.},
title= {Socio-occupational status and congenital anomalies},
year = {2009},
doi = {10.1093/eurpub/ckp003},
journal = {European Journal of Public Health},
volume = {19},
number = {2},
pages = {161--167},
}