Acknowledgements
The authors like to acknowledge statistician Robert Lundqvist, Research- and Innovation Unit, Region Norrbotten, Sweden, for his knowledge and support in the statistical analysis. We also acknowledge Professor Evangelos Georgiou, Athens University for fruitful discussions regarding simulation research. Finally, we sincerely thank all the students at Sunderby Hospital, Luleå and Umeå University for voluntarily participating in the study.