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core/journals/psychological-medicine/article/abs/agedependent-decline-of-attention-deficit-hyperactivity-disorder-a-metaanalysis-of-followup-studies/C1CEFA44EB29A76A5E441F60F5051E13 may be a Handle (DOIs are a special sort of Handle). If core/journals/psychological-medicine/article/abs/agedependent-decline-of-attention-deficit-hyperactivity-disorder-a-metaanalysis-of-followup-studies/C1CEFA44EB29A76A5E441F60F5051E13 is a valid Handle you should be able to resolve it at https://hdl.handle.net.
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