1 | Department for Post-Graduate Education, Institute of Agricultural Medicine, Lublin, Poland |
2 | Independent Laboratory of Family Physician Education, Pomeranian Medical University, Szczecin, Poland |
3 | The National Observatory for Health and Work Safety of Agricultural Workers, Institute of Agricultural Medicine, Lublin, Poland |
4 | Laboratory of Functional Diagnostics, Institute of Agricultural Medicine, Lublin, Poland |
5 | Department of Family Medicine, Silesian Medical University, Katowice, Poland |
6 | Department of Family and Community Medicine, Medical University of Łódź, Poland |