Surf these sites: Excerpt from the National Institutes of Health Consensus Development Conference Statement - 1984 -- Lack of risk has been assumed because no adverse effects have been demonstrated clearly in humans. However, other evidence dictates that a hypothetical risk must be presumed with ultrasound. Like-wise, the efficacy of many uses of ultrasound in improving the management and outcome of pregnancy also has been assumed rather than demonstrated, especially its value as a routine screening procedure. Quality assurance of medical ultrasound -- DEGUM-WORKSHOP April 2000 (Germany) Ultrasound Safety references -- part of a comprehensive guide to Obstetric ultrasound (Joseph Woo)
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