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. 2015 Mar 11;10:29. doi: 10.1186/s13023-015-0242-9

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© Martinelli et al.; licensee BioMed Central. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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The graph shows the age at onset (white bars) and the age at diagnosis (gray bars) of HHH syndrome patients. Patients are divided into four age categories: neonatal (birth —1 month) infantile (> 1 month—1 year), childhood (> 1 years— 12 yrs), and adolescence/adulthood (> 12 years). Values are expressed as percentage of the total.