Orlo H Clark MDProfessor Emeritus of Surgery, Department of Surgery, Division of General Surgery, University of California, San Francisco, USAQuan-Yang Duh MDProfessor Chief, Department of Surgery, University of California, San Francisco, USAElectron Kebebew MDSenior Investigator, Endocrine Oncology Branch, San Francisco National Cancer Institute, Bethesda, Maryland, USAJessica E Gosnell MDAssistant Professor of Surgery, Department of Surgery, Division of General Surgery, University of California, San Francisco, USAWen T Shen MD MAAssociate Professor of Clinical Surgery, Department of Surgery, Division of General Surgery, University of California, San Francisco, Medical Centre at Mount Zion, San Francisco, California, USA