1. Spontaneous neonatal pleural effusion;Yancy, W.S.; Spock, A.;J Pediatr Surg,1967
2. Pulmonary hypoplasia in Down's syndrome;Cooney, T.P.; Thurlbeck, W.M.;N Engl J Med,1982
3. Pneumothorax and chylothorax in the neonatal period;Chernick, V.; Reed, M.H.;J Pediatr,1970
4. Chylothorax in two mongoloid infants;Yoss, B.S.; Lipsitz, P.J.;Clin Genet,1977
5. Mendel defined a dominant character as one with identical or almost identical expression in the heterozygote and the homozygote.1 A relevant comparison may be difficult in man as matings between heterozygotes may be rare and, in addition, a difference in phenotype may remain undetected because of early homozygote lethality. Thus, many human conditions classified as dominant may in fact be intermediately inherited, but there are comparatively few examples where heterozygotes have been Received for publication,1986