1. Maternal Health Research Centre (E.C.C., J.F., G.M., R.S.), John Hunter Hospital, Locked Bag 1, HRMC, NSW 2310, Australia
2. NICHD, and Medicinal Chemistry Branch (K.R.), NIDDK, NIH, Bethesda, Maryland 20817-6154
3. Develpmental Endocrinology Branch (E.W., G.P.C.), NIDDK, NIH, Bethesda, Maryland 20817-6154