1. Department of Endodontics; School of Dentistry; University of Sevilla; Sevilla Spain
2. Newcastle upon Tyne Hospitals NHS Foundation Trust; Newcastle upon Tyne UK
3. Private Practice; Alsancak, İzmir Turkey
4. Department of Endodontology; Institute of Odontology; Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
5. Department of Conservative Dentistry and Endodontics; University of Cagliari; Cagliari, Sardinia Italy
6. Department of Biomedical and Neuromotor Sciences; DIBINEM; University of Bologna; Bologna Italy
7. Department of Endodontology; Dental Faculty of Istanbul Kemerburgaz University; Istanbul Turkey
8. Department of Oral and Maxillofacial Diseases; Helsinki University Hospital; University of Helsinki; Helsinki Finland
9. Research Unit of Oral Health Sciences; Medical Research Center Oulu (MRC Oulu); Oulu University Hospital and University of Oulu; Oulu Finland
10. School of Dentistry; College of Biomedical & Life Sciences; Cardiff University; Cardiff UK