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Objective: To evaluate the use of guidelines for lumbar spine fusions among spine surgeons in North America.
Methods: An anonymous survey was electronically sent to all AO Spine North America members....
BACKGROUND/AIMS: Consistently defining disease activity remains a critical challenge in the follow-up of patients with Crohn's disease (CD). We investigated the potential applicability of abdominal ultrasonography with color Doppler (USCD)...