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2. The incidence of harelip and cleft palate related to birth rank and maternal age;MacMahon;Am. J. Human Genet.,1953
3. Genetic and nongenetic factors in the etiology of congenital heart disease: A study of 1,888 cases;Lamy;Am. J. Human Genet.,1947
4. Variability in mongolism;Levinson;Pediatrics,1955
5. The No. 18 trisomy and D1 trisomy syndromes;Smith;Pediat. Clin. North America,1963