| Institution: | 1. Center for Health Research, , Portland, Oregon, 97227 USA;2. Department of Obstetrics and Gynecology, , Portland, Oregon, 97232 USA;3. Children's Hospital Oakland Research Institute, , Oakland, California, 94609 USA;4. Obesity Prevention Program, Harvard Medical School/Harvard Pilgrim Health Care Institute, , Boston, Massachusetts, 02215 USA;5. Oregon Health and Science University, , Portland, Oregon, 97239 USA;6. School of Community Health, Portland State University, , Portland, Oregon, 97201 USA |
