1. The Institute of Health Care; The Higher Vocational School-Prof. E.F. Szczepanik; Suwalki Poland
2. Department of Conservative Dentistry; Medical University in Bialystok; Bialystok Poland
3. Department of Psychiatry; Medical University in Bialystok; Bialystok Poland
4. Department of Paedodontics; Medical University in Bialystok; Bialystok Poland
5. Department of the Human Anatomy; Medical University in Bialystok; Bialystok Poland
6. Department of Rheumatology; Internal Diseases Medical University in Bialystok; Bialystok Poland