1. Hughes‐Fulford LaboratoryDepartment of MedicineMetabolism DivisionSan Francisco Department of Veterans Affairs Medical CenterSan FranciscoCaliforniaUSA
2. Northern California Institute for Research and EducationSan FranciscoCaliforniaUSA
3. Department of MedicineUniversity of CaliforniaSan FranciscoCaliforniaUSA
4. Department of SurgeryUniversity of CaliforniaSan FranciscoCaliforniaUSA