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Article History

Received: 4 September 2020

Revised: 23 September 2020

Accepted: 2 November 2020

First Online: 11 November 2020

Change Date: 11 December 2020

Change Type: Update

Change Details: The sentence "Thesecollections are rather “toy sets” through the manual gathering of publicly accessible images (e.g., online journals, and preprints on preprints non-peer-reviewed archives)." was corrected to "These collections are rather “toy sets” through the manual gathering of publicly accessible images (e.g., online journals, and preprints on non-peer-reviewed archives)."

Compliance with ethical standards

:

: The scientific guarantor of this publication is Hamid Tizhoosh, University of Waterloo, Canada.

: The authors of this manuscript declare no relationships with any companies whose products or services may be related to the subject matter of the article.

: No complex statistical methods were necessary for this paper.

: Written informed consent was not required for this study because this is a Letter to the Editor.

: Institutional Review Board approval was not required because this is a Letter to the Editor.

: • Letter to the Editor