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. 2017 Jan 19;102(6):522–528. doi: 10.1136/archdischild-2016-311198

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Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/

This is an Open Access article distributed in accordance with the terms of the Creative Commons Attribution (CC BY 4.0) license, which permits others to distribute, remix, adapt and build upon this work, for commercial use, provided the original work is properly cited. See: http://creativecommons.org/licenses/by/4.0/

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Flowchart showing number of subjects with available information in each age and those with chronic disabling fatigue. ALSPAC, Avon Longitudinal Study of Parents and Children.