Langston T. Holly, MD, is a board-certified neurosurgeon and co-director at UC Los Angeles Spine Center in Santa Monica.

Ali Araghi, DO, is a board-certified orthopedic spine surgeon at Phoenix-based The CORE Institute.

K. Samer Shamieh, MD, is a board-certified orthopedic spine surgeon and medical director at New Orleans-based DISC of Louisiana.

Sean Keem, MD, is a board-certified orthopedic spine surgeon at The Polyclinic in Seattle.

Peter D. Angevine, MD, is a board-certified neurosurgeon at New York City-based Daniel and Jane Och Spine Hospital at NewYork-Presbyterian.

Veetai Li, MD, is a board-certified pediatric neurosurgeon at University at Buffalo (N.Y.) Neurosurgery.

Sanford E. Emery, MD, is a board-certified orthopedic spine surgeon at Morgantown-based West Virginia University School of Medicine.

Carlos Bagley, MD, is a board-certified neurosurgeon and associate professor at University of Texas Southwestern Medical Center in Dallas.

Alok Sharan, MD, is a board-certified orthopedic spine surgeon and co-director of the Yonkers, N.Y.-based Westmed Spine Center.

Jesse L. Evens, MD, is a board-certified orthopedic spine surgeon at Texas Metroplex Institute for Sports Medicine & Orthopedic Surgery in Arlington.

Robin Koeleveld, MD, is a board-certified neurosurgeon at Raleigh, N.C.-based Rex Neurosurgery & Spine Specialists.

Milan B. Herceg, MD, is a board-certified orthopedic spine surgeon at Columbus, Ohio-based Orthopedic One.

George M. Greene, MD, is a board-certified neurosurgeon at Omaha-based OrthoNebraska.

Carlo Bellabarba, MD, is a board-certified orthopedic spine surgeon at Seattle-based UW Medicine.

Marcella Madera, MD, is a board-certified neurosurgeon at Austin (Texas) Brain & Spine.

J. Michael Glover, MD, is a board-certified orthopedic spine surgeon at Flagstaff-based Northern Arizona Orthopaedics.

Gregory Mundis Jr., MD, is a board-certified orthopedic spine surgeon at La Jolla, Calif.-based Scripps Clinic.

Donald Corenman, MD, is a board-certified orthopedic spine surgeon at Vail, Colo-based The Steadman Clinic.

Charles J. Winters, MD, is a board-certified orthopedic spine surgeon at Gautier, Miss.-based Bienville Orthopaedic Specialists.

Roger Härtl, MD, is a board-certified neurosurgeon at New York City-based Weill Cornell Medicine.