Updates are available Correction dated 2022-05-06

Article History

Received: 9 August 2021

Accepted: 16 March 2022

First Online: 4 April 2022

Change Date: 6 May 2022

Change Type: Correction

Change Details: A Correction to this paper has been published:

Change Details: https://doi.org/10.1186/s12888-022-03953-9

Declarations

:

: The protocol for the current observational study was reviewed and approved by the Chiba University Graduate School of Medicine Ethics Review Committee (approval number 4129). The current research was conducted in accordance with the “Ethical Guidelines for Life Science and Medical Research for Human,” which is guideline for clinical research in Japan and the provisions of the Declaration of Helsinki. Participants were explained in an online survey that answering questions would be considered consent. Participants have effective discernment because they are adults over the age of 18 and ICT skills are required to response questions on the website. Therefore, in the current research, consent was obtained only from the individual, even if he / she had a mental illness; the Institutional Review Board determined that consent from a guardian or guardian was not required. In addition, the need for ethics approval was deemed unnecessary according to national Swedish regulations as no identifiable sensitive personal data were collected “Law (2003:460) on ethics review of research involving humans”.

: Not applicable.

: The authors declare no conflicts of interest associated with this manuscript.