Rahmawati, A.D., Ahmad, I. and Setyawan, A.S. 2017. The role of cervical vertebrae maturation in defining the chronological age of Down syndrome children. Dental Journal. 50, 4 (Dec. 2017), 220–225. DOI:https://doi.org/10.20473/j.djmkg.v50.i4.p220-225.