Julihn A, Barr Agholme M, Modeer T (June 2008). "Risk factors and risk indicators in relation to incipient alveolar bone loss in Swedish 19-year-olds". Acta Odontologica Scandinavica. 66 (3): 139–47. PMID18568472. डीओआइ:10.1080/00016350802087024.
Julihn A, Barr Agholme M, Modeer T (June 2008). "Risk factors and risk indicators in relation to incipient alveolar bone loss in Swedish 19-year-olds". Acta Odontologica Scandinavica. 66 (3): 139–47. PMID18568472. डीओआइ:10.1080/00016350802087024.