at Poznan University of Medical Sciences:
| Street: | Marcelińska 42 | 
| Postal code: | 60-354 | 
| City | Poznań | 
| Country | Poland | 
| Phone number: | +48 61 854 75 52 | 
| e-mail: | badania.ucwbk@ump.edu.pl | 
| Feasibility assessment of the study: | badania.ucwbk@ump.edu.pl | 
| Phone: | +48 61 854 75 52 | 
| Study contracting: | ucwbk@ump.edu.pl | 
| Phone: | +48 508 455 229 |