As your due date gets closer, you’re probably eager to hear that your baby is in position for delivery. But breech, or feet-first presentation, affects up to 4 percent of full-term births. When this ...

Proceedings of the National Academy of Sciences of the United States of America, Vol. 77, No. 1, [Part 1: Physical Sciences] (Jan., 1980), pp. 1-4 (4 pages) Several results concerning the problem of U ...