Rahmawati, Aggiani Dewi, Iwan Ahmad, and Arlette Suzy Setyawan. 2017. “The Role of Cervical Vertebrae Maturation in Defining the Chronological Age of Down Syndrome Children”. Dental Journal 50 (4):220-25. https://doi.org/10.20473/j.djmkg.v50.i4.p220-225.