TY - JOUR A1 - Mucci, L.A. A1 - Hsieh, C.-C. A1 - Williams, P.L. A1 - Dickman, P.W. A1 - Björkman, L. A1 - Pedersen, N.L. T1 - Birth order, sibship size, and housing density in relation to tooth loss and periodontal disease: A cohort study among Swedish twins Y1 - 2004 DO - 10.1093/aje/kwh063 JF - American Journal of Epidemiology VL - 159 IS - 5 ER -