Joseph O'Brien, MD, MPHMedical Director of Minimally Invasive Spine Surgery Washington Spine and Scoliosis Institute Bethesda, MD, USAS. Babak Kalantar, MDAssociate ProfessorChief, Division of Spine SurgeryDepartment of OrthopedicsMedStar Georgetown University HospitalWashington, DC, USADoniel Drazin, MD, MAAdjunct Clinical Faculty Pacific Northwest University of Health Sciences Yakima, WAFaheem A. Sandhu, MD, PhDProfessor of Neurosurgery Director of Spine SurgeryDepartment of Neurosurgery MedStar Georgetown University HospitalWashington, DC, USA