@article{article6aa44711,
title   = {Phenotypic variability in Angelman syndrome: comparison among different deletion classes and between deletion and UPD subjects},
author = {Varela, Monica Castro and Kok, Fernando and Otto, Paulo A and Koiffmann, Celia Priszkulnik},
year = {2004},
doi = {10.1038/sj.ejhg.5201264},
journal   = {European Journal of Human Genetics}
}