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To the Editor
The authors are to be congratulated on their achievement of collating over 400 examples of adults with congenital division of their morphologically left atrial chambers.1 Their methodology, however, shows the huge strengths, but potential accompanying weaknesses, of the use of search engines to assemble the cohort of individuals to be studied. It obviously would not …
Contributors This article was written by RHA.
Competing interests None declared.
Patient consent for publication Not required.
Provenance and peer review Not commissioned; internally peer reviewed.