To the Editor The Original Investigation by Mandalenakis et al1 published in a recent issue of JAMA Internal Medicine, aims to investigate the survivorship of children and young adults with congenital heart disease (CHD) in a Swedish national registry. Surgical outcomes have improved in the current era compared with the past, which has improved the overall natural history of all CHDs, including the complex CHDs.2
Ghimire LV. Natural and Unnatural History. JAMA Intern Med. 2017;177(11):1691–1692. doi:10.1001/jamainternmed.2017.4818
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