វាស់សមត្ថភាពនៃការស្តាប់នៅក្នុងគ្រួសារ

To get an overview of hearing ability (disability) by means of audiograms from child, junior, mother, father, grandfather, and compare these results to the average hearing persons in relevant age i...

ចុះផ្សាយដោយ ខាឡូសវ៉ាហ្សាដឺខាវ៉ាឡូ