Despite the negative consequences of inadequate physicians' handoffs, very little research has been done to identify best practices. Many of the existing peer-reviewed studies had design or reporting flaws. There is remarkable consistency in the anecdotally suggested strategies; however, there remains a paucity of evidence to support these strategies. Overall, there is a great need for high-quality handoff outcomes studies focused on systems factors, human performance, and the effectiveness of structured protocols and interventions.