1. Adams, M.S., and Niswander, J.D., 1967. Developmental noise and a congenital malformation, Genet. Res. 10:313–317.
2. Bear, J. C., 1973. An association of fetal wastage with facial cleft conditions, Cleft Palate J. 10:346–359.
3. Bear, J. C., 1976. A genetic study of facial clefting in Northern England, Clin. Genet. 9:277–284.
4. Bear, J. C., 1978a. Spontaneous abortion, sex ratio and facial cleft malformations, Clin. Genet. 13:1–7.
5. Bear, J.C., 1978b. The association of sex ratio anomalies with pyloric stenosis, Teratology 17:19–23.