1. Department of Management and Logistics in Healthcare, Medical University of Lodz, Lindleya Street 6, 90-131 Lodz, Poland
2. Department of Epidemiology and Biostatistics, Medical University of Lodz, Żeligowskiego Street 7, 990-752 Lodz, Poland
3. Department of Nutrition and Epidemiology, Medical University of Lodz, Żeligowskiego Street 7, 990-752 Lodz, Poland