Vargas Meza, Xanat
Hayashi-Simpliciano, R. Shizuko
Yokoyama, Takumi
Nishimura, Chieko
Nishida, Ryohei
Ochiai, Yoichi
Article History
Received: 31 March 2022
Accepted: 6 November 2023
First Online: 16 November 2023
Competing interests
: The authors declare no competing interests.
: This article does not contain any studies with human participants performed by any of the authors. As this study focused on publicly available data diffused through social media and not on personal data, the Ethics Review Board of the University of Tsukuba concluded that it did not require ethics approval.
: This study used videos from users who consented to YouTube’s public disclosure of their data, respecting their privacy settings. It was concluded that further informed consent was not necessary by the Ethics Review Board at the University of Tsukuba. Standards to conduct the present study were based on Internet-research ethical guidelines (available at ExternalRef removed).