Product Search Search Effective Health Care website Submit search Search Tip: Use double quotes around phrases to rank exact matches higher in the result list. 2 results Sort search results by Sorted by relevance Sort by date Using the Principles of Randomized Controlled Trial Design to Guide Test Evaluation Research Report November 9, 2009 Design Specifications for Network Prototype and Cooperative To Conduct Population-Based Studies and Safety Surveillance Research Report July 28, 2009
