Published on in Vol 3, No 4 (2017): Oct-Dec
1 University of Helsinki, Helsinki, Finland
2 Department of Mathematics and Statistics, University of Helsinki, Helsinki, Finland
3 Duodecim Medical Publications Ltd, Helsinki, Finland
4 Public Health Medicine, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
5 Children’s Hospital, Pediatric Research Center, University of Helsinki and Helsinki University Hospital, Helsinki, Finland