Conflict of interest
Marko Curkovic has received lecture honoraria from Lundbeck, Sandoz, Janssen, Pliva (Teva) and Alkaloid and is currently working on a project: ‘Values and decisions at the end of life’ [VAL-DE-END] funded by Croatian Science Foundation, IP-2016-06-2721. None of these relationships are relevant to the content of this manuscript. Andro Kosec and Danijela Curkovic have no conflicts of interest to declare.
Statement of human and animal rights
The manuscript was prepared following the Declaration of Helsinki Ethical Principles for Medical Research Involving Human Subjects, adopted by the 18th World Medical Assembly, Helsinki, Finland, June 1964, and as amended most recently by the 64th World Medical Assembly, Fontaleza, Brazil, October 2013.
Written informed consent was not required, since the paper has no data obtained from patients.