All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975 as revised in 2000. This study involved secondary analysis ofexisting data. The study protocol was reviewed and approved by theEthics Committee of the National Center of Neurology and Psychiatry.

Interviews were recorded with the permission of each participant

All local, regional and national guidelines for ethical permission were followed. Ethical consideration was given with regard to the need for consent, the information requirement, confidentiality obligations and utilization requirements. The participation was voluntary, and all participants gave written informed consent for participation.

Ethics approval was granted for this study by the University Research Ethics Review Board and permission to access nursing students was received from the SON.

Observers filled rating scales and checklists independently about leader’s performance, interviews with participants

Ethics approval was obtained from the Northern X Regional ethics committee and the hospital committees from which participant teams were recruited

The hospital’s institutional review board provided its approval for the study.Nobody who was approached refused to give consent or to participate in the study.

The study was approved by all partner ethics review committees. Participants provided informed consent for the study

Participants were asked if they wished to participate in the online survey.

Not applied