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OBJECTIVES Patients with advanced ankylosing spondylitis (AS) experience disability because of reduced spinal mobility and pulmonary function impairment. This placebo-controlled study evaluated the effect of etanercept (ETN) in patients with advanced AS. METHODS A multicentre randomised double-blind placebo-controlled trial of 12 weeks' duration was(More)
BACKGROUND We carried out a prospective, randomized, 4-arm study including control arm, blinding of examiners to determine effectiveness of computer-based video instruction (CBVI) and different types of expert feedback (concurrent and summary) on learning of a basic technical skill. METHODS Using bench models, participants were pre-tested on a suturing(More)
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