1. Thermal Hospital St. George in Ciechocinek Ciechocinek Poland
2. Department of Balneology and Physical Medicine Ludwik Rydygier Collegium Medicum in Bydgoszcz of the Nicolaus Copernicus University in Torun Bydgoszcz Poland
3. Clinic of General and Oncological Urology Ludwik Rydygier Collegium Medicum in Bydgoszcz of the Nicolaus Copernicus University in Torun Bydgoszcz Poland