1. Faculty of Medicine, Riga Stradinš University, 16 Dzirciema street, Riga, Latvia, LV-1007
2. Department of Medicine, National and Kapodistrian University of Athens, Mikras Asias 75, Athens, Greece, 11527
3. UCL Centre for Nanotechnology and Regenerative Medicine, Division of Surgery and Interventional Science, University College London, London, United Kingdom
4. Faculty of Medicine, Universitas Sriwijaya, Palembang, Indonesia 30128
5. Faculty of Biology, Medicine and Health, The University of Manchester, Oxford Rd, Manchester M13 9PL, United Kingdom
6. BP Koirala Institute of Health Sciences, Buddha Road, Dharan 56700, Nepal
7. Faculty of Medicine, Rawalpindi Medical University, Rawalpindi, Pakistan 46000
8. Department of Oral and Maxillofacial Surgery, Genesis Institute of Dental Sciences & Research, Ferozepur-Moga Road, Ferozepur, Punjab, India 152002
9. Department of Biology and Microbiology, Riga Stradinš University, 16 Dzirciema street, Riga, Latvia, LV-1007