1. Stanford University Medical Center, Department of Surgery, 300 Pasteur Drive (S067), Stanford, CA 94305, United States of America (USA).
2. Ariadne Labs, Brigham and Women's Hospital and Harvard TH Chan School of Public Health, Boston, USA.
3. Stanford University Management Science and Engineering, Stanford, USA.
4. Stanford University School of Medicine, Stanford, USA.
5. Department of Surgery, Massachusetts General Hospital, Boston, USA.