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 Attention Deficit Hyperactivity Disorder: Effectiveness of Treatment in At-risk Preschoolers; Long-term Effectiveness in All Ages; and Variability in Prevalence, Diagnosis, and Treatment Research Protocol Archive August 10, 2010 Evaluation and Treatment of Tinnitus: A Comparative Effectiveness Review Research Protocol Archive February 22, 2012