David Essig, MD, is a board-certified orthopedic spine surgeon at University Orthopaedic Associates in Great Neck, N.Y.

Gregory Trost, MD, is a board-certified neurosurgeon at University of Wisconsin Health in Madison.

Peter D. Angevine, MD, is a board-certified neurosurgeon at The Spine Hospital at New York City-based Columbia University's The Neurological Institute of New York.

Charles Kanaly, MD, is a board-certified neurosurgeon at The Neurosurgery Center of Southern New England in Fall River, Mass.

John Ray, MD, is a board-certified orthopedic spine surgeon at Fort Collins (Colo.) Spine.

Marco Ferrone, MD, is a board-certified orthopedic spine surgeon at Boston-based Brigham and Women's Hospital.

Omar Osmani, MD, is an orthopedic spine surgeon and founder of the Spine and Orthopedic Center of New Mexico in Roswell.

Paul Kraemer, MD, is a board-certified orthopedic spine surgeon at Indiana Spine Group in Carmel.

Edward Song, MD, is a board-certified orthopedic spine surgeon at OrthoArizona in Gilbert.

Andre Jakoi, MD, is a board-certified orthopedic spine surgeon at Drisko, Fee & Parkins Orthopedics in North Kansas City, Mo.

David Wong, MD, is a board-certified orthopedic spine surgeon at The Spine Center of Presbyterian/St. Luke's Medical Center in Denver.

Nancy Epstein, MD, is a board-certified neurosurgeon at Winthrop Neuroscience Medical in Mineola, N.Y.

Brian Morelli, MD, is a board-certified orthopedic spine surgeon at Stony Brook Orthopaedic Associates in East Setauket, New York.

Anant Kumar, MD, is a board-certified orthopedic spine surgeon at Presbyterian/St. Luke's Medical Center in Denver.

Gregory Heuer, MD, PhD, is an attending neurosurgeon at Children's Hospital of Philadelphia.

Woosik Chung, MD, is a board-certified orthopedic spine surgeon at Denver International Spine Center at Presbyterian/St. Luke's Medical Center.

Samuel Cho, MD, is a board-certified orthopedic spine surgeon at New York City-based Mount Sinai Health System.

Michele Johnson, MD, is a board-certified neurosurgeon at Atlanta Brain and Spine Care.

Youjeong Kim, MD, is a board-certified orthopedic spine surgeon at California Pacific Medical Center in San Francisco.

Shay Bess, MD, is a board-certified orthopedic spine surgeon at Denver International Spine Center at Presbyterian/St. Luke's Medical Center.