1. Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, Oregon Health and Science University, Portland, Oregon, USA.
2. Department of Obstetrics and Gynecology, Center for Evidence-Based Policy, Oregon Health and Science University, Portland, Oregon, USA.
3. Center for the Involvement of Veterans in their Care (CIVIC), VA Portland Health Care System, Portland, Oregon, USA.
4. Division of Neonatology, Department of Pediatrics, Oregon Health and Science University, Portland, Oregon, USA.
5. Division of General Internal Medicine and Geriatrics, Department of Medicine, Oregon Health and Science University, Portland, Oregon, USA.