■ Acknowledgement, not exceeding 50 words. An acknowledgement should be brief.

Any acknowledgements should appear first at the end of your article prior to your Declaration of Conflicting Interests (if applicable), any notes and your references.

All contributors who do not meet the criteria for authorship should be listed in an `Acknowledgements’ section. Examples of those who might be acknowledged include a person who provided purely technical help, writing assistance, or a department colleague who provided support.

Manuscripts for review should be submitted electronically to Editorial Office at the following email address: [email protected]  or [email protected]

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