RT Journal Article SR Electronic T1 Heterogeneity among ectodermal dysplasias. JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP 234 OP 234 DO 10.1136/jmg.14.3.234 VO 14 IS 3 A1 N Freire-Maia YR 1977 UL http://jmg.bmj.com/content/14/3/234.abstract AB