1. Pacific Northwest Evidence-based Practice Center, Department of Medical Informatics and Clinical Epidemiology; Department of Family Medicine; and Department of Obstetrics and Gynecology, Oregon Health & Science University, Portland, Oregon (A.G.C.)
2. Pacific Northwest Evidence-based Practice Center, Department of Medical Informatics and Clinical Epidemiology, Oregon Health & Science University, Portland, Oregon (R.M.J., E.L.H., C.D.)
3. Pacific Northwest Evidence-based Practice Center, Department of Medical Informatics and Clinical Epidemiology, Oregon Health & Science University, Portland, Oregon, and Aggregate Analytics, Fircrest, Washington (A.C.S.)
4. Department of Obstetrics and Gynecology, Oregon Health & Science University, Portland, Oregon (K.J., A.B.C.)
5. Department of Obstetrics and Gynecology and School of Nursing, Oregon Health & Science University, Portland, Oregon (E.L.T.).