Key result
No clinical study data is available in the provided text, which consists only of journal boilerplate regarding reprints and permissions.
Authors
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No study data available precludes any practice change; leaves open all research questions on the topic.
Key points are not available for this paper at this time.
Peter C. Block (2005) studied this question. No clinical study data is available in the provided text, which consists only of journal boilerplate regarding reprints and permissions.