Published on in Vol 9, No 1 (2020): January
1 Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
2 Science Centre, Pirkanmaa Hospital District, Tampere, Finland
3 Tampere City Student Health Care, Tampere, Finland
4 Finnish Student Health Service, Helsinki, Finland
5 Faculty of Social Sciences, Tampere University, Tampere, Finland
6 Public Health Medicine, University of Helsinki, Helsinki, Finland
7 Helsinki University Hospital, Helsinki, Finland
*these authors contributed equally