FOOTNOTES:

1. See G. Chamberlain, "An Artificial Placenta: The Development of an Extracorporeal System for Maintenance of Immature Infants with Respiratory Problems," American Journal of Obstetrics and Gynecology 100:5 (March 1, 1968).

2. Adam et al., "Cerebral Oxidation of Glucose and D-beta- Hydroxy Butyrate in the Isolated Perfused Human Head," Transactions of the American Pediatrics Society 309:81 (1973); also see Medical World News, June 8, 1973.

3. See Kirshen, Ryan et al., "Intravenous prostaglandin F2 for therapeutic abortion," American Journal of Obstetrics and Gynecology 113:3 (Jan. 1, 1972): 340-44.

4. See Davies, Naftolin, Ryan, and Siu, "A Specific, High- Affinity, Limited-Capacity Estrogen Binding Component in the Cytosol of Human Fetal Pituitary and Brain Tissues," J. Clin. Endocrinol. Metab. 40:5 (May 1975): 909-12.