Orrù, G.; Contu, M. P.; Casula, E.; Demontis, C.; Blus, C.; Szmukler-Moncler, S.; Serreli, G.; Maserati, C.; Steri, G. C.; Fanos, V.; Coghe, F.; Denotti, G. Periodontal Microbiota of Sardinian Children: Comparing 200-Year-Old Samples to Present-Day Ones. J Pediatr Neonat Individual Med 2017, 6, e060123.