Address: 1Division of Orthopaedic Surgery, Center for Excellence in Surgical Outcomes, Duke University Medical Center, Box 3094, Durham, NC 27710, USA, 2Anesthesiology – Ambulatory Services, Duke University Medical Center, Box 3094 Med Ctr Durham, NC 27710, USA, 3Anesthesiology – Ambulatory Services Box 3094 Med Ctr Durham, NC 27710, USA, 4Hospital e Maternidade Angelina Caron, Rodovia do Caqui...