What is the fine-grained topic of the following text: James Walters, Nikk Effingham, and Stephan Lautenschlager do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their academic appointment. Only return the topic.
Disclosure of conflict of interest by James Walters, Nikk Effingham, and Stephan Lautenschlager.