1. Tampere Center for Child Health Research, University of Tampere and Tampere University Hospital,
Finn Medi 3, Biokatu 10, 33520 Tampere, Finland ; ;
2. School of Medicine, University of Tampere and Department of Internal Medicine, Tampere University Hospital,
Tampere, Finland
3. Department of Internal Medicine, Seinäjoki Central Hospital,
Seinäjoki, Finland