Artigo “Inbreeding effect on morbidity”, publicado em 1984 no periódico American Journal of Medical Genetics. Subdividido em três partes: “I. Three analyses (one with cousin and sib controls)”, de Paulo Maurício Ruas e Newton Freire-Maia; “II. Analyses of a third survey including and excluding infant-juvenile mortality among brazilian whites and negroes” e “III. A review of the world literature”, ambos de Tadeu Elisbão e Newton Freire-Maia.

Artigo “Effects of consanguineous marriages on morbidity and precocious mortality: genetic counseling”, de Newton Freire-Maia, publicado em 1984 no periódico American Journal of Medical Genetics.