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Intermediate product markets are distinct in several ways, including the large size of the transactions, and the ability to price discriminate using buyer-specific prices. We study a competitive intermediate goods market in which there are buyer-specific prices. Using a rich dataset of transactions from the UK brick industry– in which transportation costs(More)
BACKGROUND The evidence-based practice guidelines for the management of chronic spinal pain with interventional techniques were developed to provide recommendations to clinicians in the United States. OBJECTIVE To develop evidence-based clinical practice guidelines for interventional techniques in the diagnosis and treatment of chronic spinal pain,(More)
OBJECTIVE To develop evidence-based clinical practice guidelines for interventional techniques in the diagnosis and treatment of chronic spinal pain. METHODOLOGY Systematic assessment of the literature. EVIDENCE I. Lumbar Spine • The evidence for accuracy of diagnostic selective nerve root blocks is limited; whereas for lumbar provocation discography,(More)
BACKGROUND Epidural injection of corticosteroids is one of the most commonly used interventions in managing chronic spinal pain. However, there has been a lack of well-designed randomized, controlled studies to determine the effectiveness of epidural injections. Consequently, debate continues as to the value of epidural steroid injections in managing spinal(More)
BACKGROUND Comprehensive, evidence-based guidelines for interventional techniques in the management of chronic spinal pain are described here to provide recommendations for clinicians. OBJECTIVE To develop evidence-based clinical practice guidelines for interventional techniques in the diagnosis and treatment of chronic spinal pain. DESIGN Systematic(More)
BACKGROUND Epidural injection of corticosteroids is one of the most commonly used interventions in managing chronic spinal pain. The transforaminal route to the lumbar epidural space for steroid injection has gained rapid and widespread acceptance for the treatment of lumbar and leg pain. However, there are few well-designed randomized, controlled studies(More)
Painful conditions of the musculoskeletal system, including myofascial pain syndrome, constitute some of the most important chronic problems encountered in a clinical practice. A myofascial trigger points is a hyperirritable spot, usually within a taut band of skeletal muscle, which is painful on compression and can give rise to characteristic referred(More)
Fibromyalgia is a condition which appears to involve disordered central afferent processing. The major symptoms of fibromyalgia include multifocal pain, fatigue, sleep disturbances, and cognitive or memory problems. Other symptoms may include psychological distress, impaired functioning, and sexual dysfunction. The pathophysiology of fibromyalgia remains(More)