@article{articleb208fee7,
title   = {Ulnar ray a/hypoplasia: evidence for a developmental field defect on the basis of genetic heterogeneity. Report of three Brazilian families},
author = {Richieri-Costa, Antonio and Opitz, John M.},
year = {1986},
doi = {10.1002/ajmg.1320250624},
journal   = {American Journal of Medical Genetics Supplement}
}