1. Department of Oral Biology, Semmelweis University, Budapest, Hungary
2. Private practitioner, Faaborg, Denmark
3. Department of Pediatric Dentistry and Orthodontics, Semmelweis University, Budapest, Hungary
4. Albert Kenessey Hospital, Balassagyarmat, Hungary
5. Department of Dentistry, Oral and Maxillofacial Surgery, University of Pecs, Pecs, Hungary