1. Nørrisgaard PE, Qvist V, Ekstrand K (2015) Prevalence, risk surfaces and inter-municipality variations in caries experience in Danish children and adolescents in 2012. Acta Odontol Scand 74:291–297
2. Ekstrand KR, Christiansen ME, Qvist V, Ismail A (2010) Factors associated with inter-municipality differences in dental caries experience among Danish adolescents. An ecological study. Community Dent Oral Epidemiol 38:29–42
3. Pitts N (2008) The impact of diagnostic criteria on estimates of prevalence, extend and severity of dental caries. In: Fejerskov O, Nyvad B, Kidd E (eds) Dental caries: the disease and its clinical management, 2nd edn. Wiley Blackwell, Oxford, pp 148–158
4. Ballantyne H (2000) Identification of infant at high risk to developing dental caries using microbiological and social factors. University of Dundee, Dissertation
5. Cortes A (2016) Caries in young children from Bogotá, Colombia, and a new risk factor of importance. An epidemiological and clinical investigation. University of Copenhagen, Dissertation