1. Stanford University School of Medicine, Stanford, California (D.S.T., T.S., M.T.)
2. Brigham and Women's Hospital and Harvard Medical School, llBoston, Massachusetts (A.S.)
3. Stanford University School of Medicine, Stanford, California, and California Perinatal Quality Care Collaborative, Palo Alto, California (J.P.)
4. Duke University School of Medicine, Duke University Health System, and Duke Patient Safety Center, Durham, North Carolina (K.C.A., J.B.S.)
5. Stanford University School of Medicine, Stanford University School of Humanities and Sciences, and Meta-Research Innovation Center at Stanford (METRICS), Stanford, California (J.P.I.)