1. Trnava University in Trnava , Faculty of Health Care and Social Work, Department of Laboratory Medicine, Univerzitné námestie 1, 918 43 Trnava , Slovak Republic
2. Slovak Medical University , Faculty of Public Health, Department of Radiation Hygiene, Limbová 12, 833 03 Bratislava , Slovak Republic
3. MRI s. r. o. , Institute of Imaging Diagnostics, Starohájska 2, 917 01 Trnava , Slovak Republic