Objective: To evaluate the validity of the Asthma Control Test (ACT) for assessing clinical asthma control in Chinese patients in primary care settings. Methods: This multicenter study involved 403 ...
Many assays have integrated, built-in, or internal controls to demonstrate their operability at specific procedural steps. What role do these built-in controls play in quality control to assure ...
THE ASSESSMENT OF COMPANY-LEVEL CONTROLS is a critical part of complying with section 404 of Sarbanes-Oxley. The PCAOB says public companies must assess the design and operating effectiveness of these ...
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