Research involving human subjects, human material, human tissues or human data should comply with the Declaration of Helsinki. Prior to initializing research, an appropriate approval, licensing or registration must be obtained from an institutional review board (IRB) or equivalent ethics committee.

Relevant documents showing that research received the appropriate approval and was carried out ethically should be provided if requested by the editorial office.

Identifying information of participants should not be shared or disclosed unless strictly necessary for the submission. Written consent for the use of that information should be obtained from participants in that case. Written consent should be obtained for all case reports as well.