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How many times must a man look up before he can see the sky?

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R.P. and S.V. drafted the manuscript. G.G. provided important scientific contribution. All authors reviewed and approved the final manuscript. The corresponding author attests that all listed authors meet authorship criteria and that no others meeting the criteria have been omitted.

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Correspondence to Sergio Verd.

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Porta, R., Verd, S. & Ginovart, G. How many times must a man look up before he can see the sky?. Pediatr Res 95, 1164–1165 (2024). https://doi.org/10.1038/s41390-023-02965-9

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