1 Department of Paediatric Dentistry & Orthodontics, School of Dental Sciences, University of Nairobi College of Health Sciences, Nairobi, Kenya musakulu@gmail.com.
2 Centre for Oral Bioengineering, Institute of Dentistry, Queen Mary University of London Faculty of Medicine and Dentistry, London, UK.
3 Department of Oral and Maxillofacial, Head and Neck Surgery, Barts Health NHS Trust, London, UK.