Antti-Tuomas Heinonen: conception and design, acquisition of data and analysis, interpretation of data, drafting the article by revising it critically for important intellectual content, and final approval of the version submitted. Maria Kääriäinen and Jonna Juntunen: drafting the article by revising it critically for important intellectual content, and final approval of the version submitted. Kristina Mikkonen: conception and design, data analysis, interpretation of data, drafting the article by revising it critically for important intellectual content, and final approval of the version submitted. Acknowledgement We would like to thank the students who took time to share their experiences.