1. Departments of Nutritional Sciences (B.H.A., D.A.K., B.J.S., E.A.L., S.J.), Stillwater, Oklahoma 74078
2. Statistics (M.E.P.), Oklahoma State University, Stillwater, Oklahoma 74078
3. Department of Obstetrics and Gynecology (R.A.W.), University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73190