1. Department of Urology, Tampere University Hospital, Tampere, Finland
2. Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
3. Department of Urology, Päijät-Häme Central Hospital, Lahti, Finland
4. Centre for Military Medicine, Finnish Defence Forces, Riihimäki, Finland
5. Hospital Mehiläinen, Oulu, Finland
6. Faculty of Social Sciences, Tampere University, Tampere, Finland