REFERENCES
- Hall, J. E., Kohl, S. G., O'Brien, F. and Ginsberg, M.: Breech presentation and perinatal mortality; a study of 6,044 cases. Amer J Obstet Gynec 91:665, 1965.
- Bishop, E. H., Israel, S. L. and Briscoe, C. C.: Obstetric influences on the premature infant's first year of development. A report from the collaborative study of cerebral palsy. Obstet Gynec 26: 628, 1965.
- Eastman, N. J. and Hellman, L. M.: Williams Obstetrics. Ed 13. New York, Appleton-Century-Crofts, 1966, p 315.