Transparency
Declaration of funding
No funding was received to produce this article.
Declaration of financial/other relationships
No financial/other relationships to disclose.
Author contributions
JXZ: conceptualization, manuscript development, and approval. LRS: manuscript development, and approval.
Acknowledgements
We thank three anonymous reviewers for their constructive comments.
Reviewer disclosures
Peer reviewers on this manuscript have no relevant financial or other relationships to disclose.