Michelle M Mello1,2, C Jason Wang3,4. 1. Center for Health Policy/Primary Care and Outcomes Research, Department of Medicine, Stanford University School of Medicine, Stanford, CA, USA. mmello@law.stanford.edu. 2. Stanford Law School, Stanford, CA, USA. 3. Center for Health Policy/Primary Care and Outcomes Research, Department of Medicine, Stanford University School of Medicine, Stanford, CA, USA. 4. Department of Pediatrics and Center for Policy, Outcomes and Prevention, Stanford University School of Medicine, Stanford, CA, USA.